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World Population

Sameera Reddy, World Population | Wednesday, November 24, 2010 | 0 Comments

Estimates the current world population based on US census data and the world growth rate. Not exactly precise, but neat anyways. World Population is estimated to be: 6,933,407,746

Wavelength Calculator

Dj Gandhi, Sameera Reddy, Wavelength Calculator | Wednesday, November 24, 2010 | 0 Comments

Assists ham radio operators in converting a frequency to its wavelength in feet or inches. Other uses include acoustic measurement and adjustment, microphone placement, room tuning, and speaker positioning.

Wind Chill Calculator

Dj Gandhi, Sameera Reddy, Wind Chill Calculator | Wednesday, November 24, 2010 | 0 Comments

Wind Chill is a mysterious and often misunderstood phenomenon. This script describes what the wind chill factor really is and offers a form to calculate the wind chill factor when given the air temperature and wind speed.

Top Speed by RPM

Dj Gandhi, Sameera Reddy, Top Speed by RPM | Wednesday, November 24, 2010 | 0 Comments

Enter the diameter of the tire and the RPM value of the motor and the script will tell you the top speed without any weight on the Tires. Neat!

JavaScript Source Code 3000: Calculators: Top Speed by RPM Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </script>  </HEAD>    <BODY>  <form name="rpmForm"> <table border=0> <tr> <td> Diameter of Tire (in Inches) </td> <td> <input type=text name=diameter value=18> </td> </tr> <tr> <td> RPM Value </td> <td> <input type=text name=rpm value=2000> </td> </tr> <tr> <td colspan=2> <input type=button value="Calculate Top Speed" onClick="calculate()">  </td> </tr> <tr> <td> Top Speed with no Weight </td> <td> <input type=text name=topSpeed> </td> </tr> </table> </form>

Tax

Sameera Reddy, Tax | Wednesday, November 24, 2010 | 0 Comments

JavaScript helps your to calculate the before and after tax prices for purchases. Very easy to use. Just put into the price, the tax, and hit compute! It's all figured for you!

JavaScript Source Code 3000: Calculator: Money Formatter Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">  </SCRIPT>    <BODY>  <CENTER> <FORM> <TABLE BORDER=2 WIDTH=300 CELLPADDING=3> <TR> <TD align="center"><FONT SIZE=+1><STRONG>Cost</STRONG></FONT> <TD align="center"><FONT SIZE=+1><STRONG>Tax</STRONG></FONT> </TR> <TR> <TD align="center"><INPUT TYPE="text" NAME="cost" VALUE="19.95" SIZE=10> <TD align="center"><INPUT TYPE="text" NAME="tax" VALUE=".06" SIZE=10> </TR> </TABLE> <BR> <TABLE BORDER=1 WIDTH=600 CELLPADDING=3> <TR> <TD align="center"><FONT SIZE=+1><STRONG>Unformatted Tax</STRONG></FONT> <TD align="center"><FONT SIZE=+1><STRONG>Formatted Tax</STRONG></FONT> <TD align="center"><FONT SIZE=+1><STRONG>TOTAL COST</STRONG></FONT> </TR> <TR> <TD align="center"><INPUT TYPE="text" NAME="unformatted_tax" SIZE=15> <TD align="center"><INPUT TYPE="text" NAME="formatted_tax" SIZE=15> <TD align="center"><INPUT TYPE="text" NAME="total_cost" SIZE=15> </TR> </TABLE> <BR> <TABLE BORDER=0 WIDTH=400 CELLPADDING=5> <TR> <TD align="center"><INPUT TYPE="reset"  VALUE="RESET" onClick="resetIt()"> <TD align="center"><INPUT TYPE="button" VALUE="COMPUTE" onclick="compute()"> </TR> </TABLE> </CENTER>

Tangent Calculator

Tangent Calculator | Wednesday, November 24, 2010 | 0 Comments

Enter the opposite and adjacent angle values and JavaScript will solve the tangent angle for you. Neat!

JavaScript Source Code 3000: Calculators: Tangent Calculator: Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<SCRIPT LANGUAGE="JavaScript">   <! >   </script>    <center> <form> <table border=3 cellspacing=2 cellpadding=5> <tr> <td align=center><i>Opposite Angle</i></td> <td align=center><i>Adjacent Angle</i></td> <td align=center><i>Tangent Angle</i></td> </tr> <tr> <td align=center><input type=text name=opp size=15></td> <td align=center><input type=text name=adj size=15></td> <td align=center><input type=text name=tan size=15></td> </tr> <tr> <td colspan=3 align=center><input type=button value="Calculate!" onclick="calctan(this.form)"></td> </tr> </table> </form> </center>

Straight Distance

Straight Distance | Wednesday, November 24, 2010 | 0 Comments

Enter a coordinate pair for each the starting and ending points according to the Cartesian coodinate system. The script will calculate the straight line distance between the two points.

JavaScript Source Code 3000: Calculators: Straight Distance Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </script> </HEAD>    <BODY>  <center> <form> <table border=3 cellspacing=2 cellpadding=5> <tr> <td colspan=4 align=center>Distance Calculator: From point A to point B</td> </tr> <tr> <td colspan=2 align=center>Point A</td> <td colspan=2 align=center>Point B</td> </tr> <tr> <td align=center>(x<sub>A</sub>,</td> <td align=center>y<sub>A</sub>)</td> <td align=center>(x<sub>B</sub>,</td> <td align=center>y<sub>B</sub>)</td> </tr> <tr> <td align=center><input type=text name=x1 size=5></td> <td align=center><input type=text name=y1 size=5></td> <td align=center><input type=text name=x2 size=5></td> <td align=center><input type=text name=y2 size=5></td> </tr> <tr> <td colspan=4 align=center><input type=button value="Solve Distance" onClick="distance(this.form)"></td> </tr> <tr> <td colspan=4 align=center><input type=text name=answer size=20></td> </tr> </table> </form> </center>

Stock Calculator

Stock Calculator | Wednesday, November 24, 2010 | 0 Comments

Deciding when to buying and sell stocks is difficult enough - figuring the profit or loss from that trade shouldn't have to be. Just enter the number of shares, your purchase price, your selling price, and the commission fees for the trade and this script instantly figures your resulting profit or loss after commission fees.

JavaScript Source Code 3000: Calculators: Stock Calculator Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">  <! > <! >   </script> </HEAD>    <BODY>  <center> <form name='stockform'> <table border=1> <tr> <td align=center><font face="arial, helvetica" size="-1">Shares</td> <td><input type=text name=shares size=11></td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Symbol</td> <td><input type=text name=symbol size=11></td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Purchase Price</td> <td><input type=text name=buyprice size=8> *</td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Sell Price</td> <td><input type=text name=sellprice size=8> *</td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Buy commission</td> <td><input type=text name=buycomm size=11></td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Sell Commission</td> <td><input type=text name=sellcomm size=11></td> </tr> <tr> <td colspan=2 align=center> <input type=button name=calc value="Calculate Trade" onClick="javascript:stocks(this.form)"> </td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Purchased For</font></td> <td align=center><input type=text name=buycost size=11></td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Sold For</font></td> <td align=center><input type=text name=sellcost size=11></td> </tr> <tr> <td align=center><font face="arial, helvetica" size="-1">Result</font></td> <td align=center><input type=text name=result size=11></td> </tr> </table> <p> <font face="arial, helvetica" size="-2"> * <a href="javascript:dectable();">Remember to convert fractions to decimals!</a> </font> </form> </center>

Square Root Calculator

Square Root Calculator | Wednesday, November 24, 2010 | 0 Comments

Allows you to find the value of a number squared or that number's square root. Easy!

JavaScript Source Code 3000: Calculators: Square Root Calculator Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">     <! > <! >   </script> </HEAD>    <BODY>  <center> <form> <table border=1> <tr> <td> <input type=text name=num size=10> </td> <td> <input type=button value="Sq. Root" onClick="sqRt(this.form)"><br> <input type=button value="Square It" onClick="sqIt(this.form)"> </td> <td> <input type=text name=answer size=15><br> <input type=button value="<-- copy back" onClick="this.form.num.value = this.form.answer.value"> </td> </tr> </table> </form> </center>

Sine Calculator

Sine Calculator | Wednesday, November 24, 2010 | 0 Comments

Enter the opposite and hypotenuse angle values and JavaScript will solve the sine angle for you. Neat!

JavaScript Source Code 3000: Calculators: Sine Calculator: Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<SCRIPT LANGUAGE="JavaScript">   <! >   </script>    <center> <form> <table border=3 cellspacing=2 cellpadding=5> <tr> <td align=center><i>Opposite Angle</i></td> <td align=center><i>Hypotenuse Angle</i></td> <td align=center><i>Sine Angle</i></td> </tr> <tr> <td align=center><input type=text name=opp size=15></td> <td align=center><input type=text name=hyp size=15></td> <td align=center><input type=text name=sin size=15></td> </tr> <tr> <td colspan=3 align=center><input type=button value="Calculate!" onclick="calcsin(this.form)"></td> </tr> </table> </form> </center>

Scientific

Scientific | Wednesday, November 24, 2010 | 0 Comments

This is a very cool JavaScript calculator that does many advanced functions - cosine, sine, tangent, square root, exponents, etc. Very Cool!

JavaScript Source Code 3000: Calculator: Scientific Calculator Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">  <! > <! >   </SCRIPT>    <BODY>  <CENTER> <FORM> <input name="display" value="0" size=25></td> <br> <input type="button" value="   exp  " onClick="if (checkNum(this.form.display.value)) {  exp(this.form) }"> <input type="button" value="    7    " onClick="addChar(this.form.display, '7')"> <input type="button" value="    8    " onClick="addChar(this.form.display, '8')"> <input type="button" value="    9    " onClick="addChar(this.form.display, '9')"> <input type="button" value="    /    " onClick="addChar(this.form.display, '/')"> <br> <input type="button" value="   ln    " onClick="if (checkNum(this.form.display.value)) {  ln(this.form) }"> <input type="button" value="    4    " onClick="addChar(this.form.display, '4')"> <input type="button" value="    5    " onClick="addChar(this.form.display, '5')"> <input type="button" value="    6    " onClick="addChar(this.form.display, '6')"> <input type="button" value="    *    " onClick="addChar(this.form.display, '*')"> <br> <input type="button" value="   sqrt  " onClick="if (checkNum(this.form.display.value)) { sqrt(this.form) }"> <input type="button" value="    1    " onClick="addChar(this.form.display, '1')"> <input type="button" value="    2    " onClick="addChar(this.form.display, '2')"> <input type="button" value="    3    "  onClick="addChar(this.form.display, '3')"> <input type="button" value="    -    "  onClick="addChar(this.form.display, '-')"> <br> <input type="button" value="   sq    " onClick="if (checkNum(this.form.display.value)) {  square(this.form) }"> <input type="button" value="    0    " onClick="addChar(this.form.display, '0')">  <input type="button" value="    .    " onClick="addChar(this.form.display, '.')">  <input type="button" value="   +/-   " onClick="changeSign(this.form.display)"> <input type="button" value="    +    " onClick="addChar(this.form.display, '+')"> <br> <input type="button" value="    (    " onClick="addChar(this.form.display, '(')">  <input type="button" value="   cos   " onClick="if (checkNum(this.form.display.value)) {  cos(this.form) }"> <input type="button" value="   sin   " onClick="if (checkNum(this.form.display.value)) { sin(this.form) }"> <input type="button" value="   tan   " onClick="if (checkNum(this.form.display.value)) {  tan(this.form) }"> <input type="button" value="    )    " onClick="addChar(this.form.display, ')')">  <br> <input type="button" value="   Clear       "  onClick="this.form.display.value = 0 "> <input type="button" value="   Back Space  " onClick="deleteChar(this.form.display)"> <input type="button" value="   Enter       " name="enter" onClick="if (checkNum(this.form.display.value)) {  compute(this.form) }"> </FORM> </CENTER>

Savings Estimator

Savings Estimator | Wednesday, November 24, 2010 | 0 Comments

Enter how much you can afford to save each month, how long you can save this amount, and the interest rate you can get on your savings and this script will display your total savings.

JavaScript Source Code 3000: Calculators: Savings Estimator Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </script> </HEAD>    <BODY>  <center> <form method=post name="calform"> <table width=400> <tr> <td align=right width=200>Total invested each month:</td> <td><input type=text name=payment size=13 maxlength=13></td> </tr> <tr> <td align=right width=200>Number of months/years to aquire sum:</td> <td><input type=text name=months size=3 maxlength=3>  <select name=period size=1> <option value="m">Months <option value="y">Years </select> </td> </tr> <tr> <td align=right width=200>Interest rate on savings:</td> <td><input type=text name=interest size=5 maxlength=5><b> %</b></td> </tr> <tr> <td width=200 colspan=2 align=center> <br> <input type=button name=button1 value="How much will I have?" onClick="javascript:CalcA()"></td> </tr> <tr> <td colspan=2 align=center width=100>Total : <input type=text name=total value="0.00" size=15 maxlength=15></td> </tr> </table> </form> </center>

Running Calculator

Running Calculator | Wednesday, November 24, 2010 | 0 Comments

Allows runners to calculate their time, distance covered, or pace by entering the other two values. Distance and pace can be converted between various measurements. A great 3-in-1 script for runners!

JavaScript Source Code 3000: Calculators: Running Calculator Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </script> </HEAD>    <BODY>  <center> <form name="Calc"> <table border=1 cellpadding=10 cellspacing=0> <tr> <td> <center> <font size=+1><b>Calculate Your:  </b></font> <select name=CalcWhat onChange="checkCalc();"> <option value=0 selected>- Choose - <option value=1>Time <option value=2>Distance <option value=3>Pace </select> </center> <p> Time:  <input type=text name=timeM size=9> minutes, <input type=text name=timeS size=9> seconds <p> Distance:  <input type=text name=distance size=9><br> (Measure in: <input type=radio name="optDist" value="miles" checked> Miles  <input type=radio name="optDist" value="kilometers"> Kilometers  <input type=radio name="optDist" value="meters"> Meters) <p> Pace time:  <input type=text name=paceM size=9> minutes, <input type=text name=paceS size=9> seconds<br> (Pace distance: <input type=radio name="optPace" value="miles" checked>Miles  <input type=radio name="optPace" value="400meters">400m  <input type=radio name="optPace" value="kilometers">Kilometers)  </td> </tr> <tr> <td colspan=2 align=center> <input type=button value="Calculate" onClick="calcIT()"> </td> </tr> </table> </form> </center>

Round

Round | Wednesday, November 24, 2010 | 0 Comments

A simple function to round a decimal number to any number of decimal places you want just by passing it different values. Neat! Very short code, too!

1
1.2
1.23
1.23
1.23

JavaScript Source Code 3000: Calculators: Round Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

Room Size

Room Size | Wednesday, November 24, 2010 | 0 Comments

Use JavaScript to find the approximate room size you'll need depending on your room setup and arrangement.

JavaScript Source Code 3000: Calculators: Room Size Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">  </SCRIPT>    <BODY>  <CENTER> <FORM NAME="room" METHOD="post"> <TABLE BORDER> <TR> <TD COLSPAN=8 ALIGN=CENTER> <B>Number of people or exhibition booths</B> <INPUT TYPE="text" name="attendance" SIZE=8></TD> </TR> <TR><TD COLSPAN=8 ALIGN=CENTER> <INPUT TYPE="button" value="Calculate" onClick="SizeCalc(this.form)"> <input type="button" value="Reset" onclick="ClearInput(this.form)"></TD> </TR> <TR ALIGN=CENTER><TD COLSPAN=8><B>Room Size Required</B></TD> </TR> <TR ALIGN=CENTER><TD COLSPAN=2><FONT SIZE=2>Banquet </TD><TD></TD><TD COLSPAN=2><FONT SIZE=2>School <BR> Room</TD><TD></TD><TD COLSPAN=2><FONT SIZE=2>Trade Show</TD> </TR> <TR ALIGN=CENTER><TD><FONT SIZE=2>60" <BR> round <BR> tables</TD><TD><FONT SIZE=2>72" <BR> round <BR>tables</TD><TD><FONT SIZE=2>Theater Seating</TD><TD><FONT SIZE=2>18" <BR>desks</TD><TD><FONT SIZE=2>30" <BR>desks</TD><TD><FONT SIZE=2>Reception</TD><TD><FONT SIZE=2>8'x10' <BR> booths</TD><TD><FONT SIZE=2>10'x10' <BR>booths</TD> </TR> <TR><TD><FONT SIZE=2> <INPUT TYPE="text" name="banquet60" SIZE=8> Sq. Ft.</TD><TD><FONT SIZE=2> <INPUT TYPE="text" name="banquet72" SIZE=8> Sq. Ft.</TD> <TD><FONT SIZE=2><INPUT TYPE="text" NAME="theater" SIZE=8> Sq. Ft.</TD> <TD><FONT SIZE=2><INPUT TYPE="text" name="school18" SIZE=8> Sq. Ft.</TD> <TD><FONT SIZE=2><INPUT TYPE="text" name="school30" SIZE=8> Sq. Ft.</TD> <TD><FONT SIZE=2><INPUT TYPE="text" name="reception" SIZE=8> Sq. Ft.</TD> <TD><FONT SIZE=2><INPUT TYPE="text" NAME="trade8" SIZE=8> Sq. Ft.</TD> <TD><FONT SIZE=2><INPUT TYPE="text" NAME="trade10" SIZE=8> Sq. Ft.</TD> </TR> </TABLE> </FORM> </CENTER>

RGB Slider

RGB Slider | Wednesday, November 24, 2010 | 0 Comments

Simple RGB to HEX color converter utilizing DHTML sliders. Amazing!

JavaScript Source Code 3000: Calculators: RGB Slider Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <style type="text/css">  </style>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </script> </HEAD>    <BODY OnLoad="init()">    <div id="red"></div> <div id="green"></div> <div id="blue"></div>  <div id="redSlider"></div> <div id="greenSlider"></div> <div id="blueSlider"></div> <div id="colorTable"> <table border=0 cellpadding=0 cellspacing=1> <tr><td colspan=18 align=center id="subtext">Standard 216 Color Palette</td></tr> <script>  </script> </table> </div> <div id="display"><img src="blank.gif" width=50 height=50 border=0></div> <div id="titleBar"> <table border=0 cellpadding=2 cellspacing=0 width=320> <tr> <td id="title">Houser's RGB2HEX DHTML App</td> </tr> </table> </div> <div id="hexValue"><form name="frmValue"> <table border=0 cellpadding=2 cellspacing=0 width=320 bgcolor=#EEEEEE> <tr> <td align=center> <table border=0 cellpadding=2 cellspacing=0> <tr> <td id="subtext">Red</td> <td id="subtext">Green</td> <td id="subtext">Blue</td> </tr> <tr> <td><input type=text size=3 maxlength=3 name="RgbDisp" value="0" onBlur="manualSet(this.value,'red');"></td> <td><input type=text size=3 maxlength=3 name="rGbDisp" value="0" onBlur="manualSet(this.value,'green');"></td> <td><input type=text size=3 maxlength=3 name="rgBDisp" value="0" onBlur="manualSet(this.value,'blue');"></td> </tr> </table> </td> <td align=center> <table border=0 cellpadding=2 cellspacing=0> <tr> <td id="subtext">Hexdecimal</td> </tr> <tr> <td><input type=text size=6 maxlength=6 name="valueDisp" value="000000" onBlur="convertHex();"></td> </tr> </table> </td> </tr> </table></form> </div>    <form> <input type=button value="Open RGB Slider" onClick="window.open('rgb-slider.html','sliderdemo', 'width=600,height=300,left=150,top=150');"></form><P>

Random Distribution

Random Distribution | Wednesday, November 24, 2010 | 0 Comments

Generate normally distributed random numbers by entering a mean value and standard deviation. Uses the normal law of error to determine an events given probability. Neat!

JavaScript Source Code 3000: Calculators: Random Distribution Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </script>  </HEAD>    <BODY>  <center> <form name=statForm> <table cellpadding=0 bgcolor=black> <tr> <td> <table border=0 cellpadding=5 bgcolor=ffffcc> <tr> <td colspan=2> <center> <font face=arial size=2> <b>GENERATION OF A RANDOM SET OF NORMALLY DISTRIBUTED VALUES</b> </font> </center> </td> </tr> <tr> <td colspan=2> <center> <b>Normal Law Universe Parameters </center> </td> </tr> <tr> <td> <b>Mean value = <input type=text  name="m" size=15></b> </td> <td> <b>Std. Deviation = <input type=text name="s" size=15></b> </td> </tr> <tr> <td colspan=2> <center> <b>Number of points to generate = <input type=text name="n" size=10></b> <input type=button value="Generate Sample" onClick="calculate()"> </center> </td> </tr> <tr> <td> <center> <b>Calculated Random Sample values</b> <br> <textarea name=vals rows=5 cols=20></textarea>  </center> </td> <td valign=top> <center> <b>Calculated Sample Properties</b> <br> <br> <b>Mean value   = <input type=text name="mm" size=20> <br> Std. Deviation = <input type=text name="ss" size=20> </b> </center> <br> </td> </tr> </table> </td> </tr> </table> </form> </center>

Radioactive

Radioactive | Wednesday, November 24, 2010 | 0 Comments

Use JavaScript to find how much radioactive material remains after a given time. Note: Please enter the halflife, original amount, and elapsed time since the original amount was true and the current amount, and percentof the original will be returned. Please note that the time periods and mass amounts must be in the same units or the results will be inaccurate.

JavaScript Source Code 3000: Calculators: Radioactive Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">  <! > <! >   </SCRIPT>    <BODY>  <CENTER>  <TABLE border=1>  <TR>  <TD>Halflife</TD>  <TD>Amount</TD>  <TD>Time</TD>  </TR>  <TR>  <TD><FORM><input name="h" size=10 ></TD>  <TD><input name="a" size=10 ></TD>  <TD><input name="t" size=10 ></TD>  <TD><input type="button" value="Calculate Amount Left" onclick="computeamount()"></TD>  </TR>  </TABLE> </CENTER> <BR>The amount remaining is:  <input name="result1" size=22> or  <input name="result2" size=5> percent of the original sample. <input type="reset" value="Reset Form"> </FORM>

Quadratic Solver

Quadratic Solver | Wednesday, November 24, 2010 | 0 Comments

Solves quadratic equations for inputted coefficients. Answers can be either real or complex. Awesome!

JavaScript Source Code 3000: Calculators: Quadratic Solver Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Command-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">   <! > <! >   </script>  </HEAD>    <BODY>  <form name=fquad> <table> <tr> <td> <h2> <input name=fa size=4> x<SUP>2</SUP>+ <input name=fb size=4> x + <input name=fc size=4> = 0  <input type=button value="Solve" onClick="checkQuad()"> <input type=reset value="Reset"> </h2> </td> </tr> <tr> <td> <h2> x<sub>1</sub>=<input name=x1 size=45> <br> x<sub>2</sub>= <input name=x2 size=45> </h2> </td> </tr> </table> </form>

Quadratic Equation

Quadratic Equation | Wednesday, November 24, 2010 | 0 Comments

Why didn't I have one of these during high school math? Just enter the coefficients for the 'Ax^2 + Bx + C = 0' equation and JavaScript will output the solutions (if they are not imaginary!). Neat!

JavaScript Source Code 3000: Calculator: Quadratic Equation Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </SCRIPT> </head>    <BODY>  <center> <form name=form> <table border=1 cellpadding=2> <tr> <td colspan=2 align=center><b>Quadratic Equation:<br>Ax<sup>2</sup> + Bx + C = 0</b></td> </tr> <tr> <td> <center><table border=1 width=100% cellpadding=2> <tr> <td align=center><b>A = </b></td> <td align=center><input type=text size=6 name="a"></td> </tr> <tr> <td align=center><b>B = </b></td> <td align=center><input type=text size=6 name="b"></td> </tr> <tr> <td align=center><b>C = </b></td> <td align=center><input type=text size=6 name="c"></td> </tr> </table> </td> <td> <center><table border=1 width=100% cellpadding=2> <tr> <td colspan=2 align=center> <input type=button value="Solve" onClick="quad(this.form)"></td> </tr> <tr> <td align=center><b>X1 = </b></td> <td align=center><input type=text size=6 name="x1"></td> </tr> <tr> <td align=center><b>X2 = </b></td> <td align=center><input type=text size=6 name="x2"></td> </tr> </table> </td> </tr> </table> </form> </center>

Pythagorean Theorem

Pythagorean Theorem | Wednesday, November 24, 2010 | 0 Comments

One of geometry's most useful formulas, the Pythagorean Theorem, can be applied to the numbers you enter in JavaScript! Just enter 'A' and 'B' and the script solves for 'C.' Neat!

JavaScript Source Code 3000: Calculators: Pythagorean Theorem Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

Prime Number

Prime Number | Wednesday, November 24, 2010 | 0 Comments

Enter a number and JavaScript can instantly tell you if it is a prime number or not. I wish I had this little gem to help me in my math classes years ago!

JavaScript Source Code 3000: Calculator: Prime Number Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<SCRIPT LANGUAGE="JavaScript">  <! > <! >   </SCRIPT> </HEAD>    <center> <form name=form> <h2>Prime Number Calculator</h2><p> Please enter a number:<br> <input type=text name=number size=7> <input type=button value="Calculate" onClick="calculate(this.form)"> <P> <input type=text name=result size=45 value=""> </form> </center>

Pregnancy Calculator

Pregnancy Calculator | Wednesday, November 24, 2010 | 0 Comments

Enter the mother's pregnancy information into this calculator and JavaScript will provide an estimated conception date, birth due date, and an estimated current fetal age. Great for all those mothers-to-be!

JavaScript Source Code 3000: Calculators: Pregnancy Calculator Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">    <! > <! >    // Checks for the following valid date formats: // MM/DD/YY   MM/DD/YYYY   MM-DD-YY   MM-DD-YYYY  var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/; // requires 4 digit year  var matchArray = dateStr.match(datePat); // is the format ok? if (matchArray == null) { alert("Date is not in a valid format.") return false; } month = matchArray[1]; // parse date into variables day = matchArray[3]; year = matchArray[4]; if (month < 1 || month > 12) { // check month range alert("Month must be between 1 and 12."); return false; } if (day < 1 || day > 31) { alert("Day must be between 1 and 31."); return false; } if ((month==4 || month==6 || month==9 || month==11) && day==31) { alert("Month "+month+" doesn't have 31 days!") return false; } if (month == 2) { // check for february 29th var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); if (day>29 || (day==29 && !isleap)) { alert("February " + year + " doesn't have " + day + " days!"); return false;    } } return true; }  function dispDate(dateObj) { month = dateObj.getMonth()+1; month = (month < 10) ? "0" + month : month;  day   = dateObj.getDate(); day = (day < 10) ? "0" + day : day;  year  = dateObj.getYear(); if (year < 2000) year += 1900;  return (month + "/" + day + "/" + year); }  function pregnancyCalc(pregform) { menstrual = new Date(); // creates new date objects ovulation = new Date(); duedate = new Date(); today = new Date(); cycle = 0, luteal = 0; // sets variables to invalid state ==> 0  if (isValidDate(pregform.menstrual.value)) { // Validates menstual date  menstrualinput = new Date(pregform.menstrual.value); menstrual.setTime(menstrualinput.getTime()) } else return false; // otherwise exits  cycle = (pregform.cycle.value == "" ? 28 : pregform.cycle.value); // defaults to 28 // validates cycle range, from 22 to 45 if (pregform.cycle.value != "" && (pregform.cycle.value < 22 || pregform.cycle.value > 45)) { alert("Your cycle length is either too short or too long for \n" + "calculations to be very accurate!  We will still try to \n" + "complete the calculation with the figure you entered. "); }  luteal = (pregform.luteal.value == "" ? 14 : pregform.luteal.value); // defaults to 14 // validates luteal range, from 9 to 16 if (pregform.luteal.value != "" && (pregform.luteal.value < 9 || pregform.luteal.value > 16)) { alert("Your luteal phase length is either too short or too long for \n" + "calculations to be very accurate!  We will still try to complete \n" + "the calculation with the figure you entered. "); }  // sets ovulation date to menstrual date + cycle days - luteal days // the '*86400000' is necessary because date objects track time // in milliseconds;  86400000 milliseconds equals one day ovulation.setTime(menstrual.getTime() + (cycle*86400000) - (luteal*86400000)); pregform.conception.value = dispDate(ovulation);  // sets due date to ovulation date plus 266 days duedate.setTime(ovulation.getTime() + 266*86400000); pregform.duedate.value = dispDate(duedate);  // sets fetal age to 14 + 266 (pregnancy time) - time left var fetalage = 14 + 266 - ((duedate - today) / 86400000); weeks = parseInt(fetalage / 7); // sets weeks to whole number of weeks days = Math.floor(fetalage % 7); // sets days to the whole number remainder  // fetal age message, automatically includes 's' on week and day if necessary fetalage = weeks + " week" + (weeks > 1 ? "s" : "") + ", " + days + " days"; pregform.fetalage.value = fetalage;  return false; // form should never submit, returns false } //  End --> </script> </HEAD>    <BODY>  <center> <form onSubmit="return pregnancyCalc(this);"> <table> <tr><td> <pre> Last Menstrual Period:        <input type=text name=menstrual value="" size=10 maxlength=10>                               (MM/DD/YYYY format)  Average Length of Cycles:     <input type=text name=cycle value="" size=3 maxlength=3> (22 to 45)                               (defaults to 28)  Average Luteal Phase Length:  <input type=text name=luteal value="" size=3 maxlength=3> (9 to 16)                               (defaults to 14)  <center><input type=submit value="Calculate!"></center>  Estimated Conception:         <input type=text name=conception value="" size=20> Estimated Due Date:           <input type=text name=duedate value="" size=20> Estimated Fetal Age:          <input type=text name=fetalage value="" size=20> </pre> </td></tr> </table> </form> </center>

Playoff Chart Maker

Playoff Chart Maker | Wednesday, November 24, 2010 | 0 Comments

Enter the number of teams in your tournament and JavaScript will output the appropriate single-elimination playoff chart. Just print it out and fill it in to track your tournament. Great!

JavaScript Source Code 3000: Calculators: Playoff Chart Maker Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s). The script is yours!!!

<HEAD>  <html> <head> <script> empty = "<html><body> </body></html>"; </script> </head> <frameset rows="97,*" frameborder=1> <frame name=header scrolling=no noresize target=main src="playoff-chart-top.html"> <frame name=main src="javascript:parent.empty;"> <noframes> Oops!  Your browser doesn't support frames. </noframes> </frameset> </html>      <SCRIPT LANGUAGE="JavaScript">    <! > <! >   </script> <base target="main"> </HEAD>  <BODY>  <p> <font face="arial, helvetica" size="-1">This page builds a single-elimination tournament based on the number of teams.  Enter the number of teams, then click "Go!"</font> <p> <form> <b>Number of Teams:</b> <input type=text name=TeamCount size=6 value=2> <input type=button value="Go!" name=GoButton onClick="GeneratePlayoffs();"> </form>

Phone Number Converter

Phone Number Converter | Wednesday, November 24, 2010 | 0 Comments

Have you ever wondered if your phone number has a memorable text equivalent, like 555-HELP? Just type it in and this script will generate all possible combinations, just pick your favorite one and tell the world how to reach you.

JavaScript Source Code 3000: Calculators: Phone Number Converter Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as NotePad or SimpleText) and save (Control-s or Apple-s). The script is yours!

<HEAD>  <SCRIPT LANGUAGE="JavaScript">     <! > <! >   </SCRIPT>    <center> <form name=Form1>  <h3>Phone Number Converter</h3><P> Phone Number:   <input type="text" name="First3" size="3" maxlength="3"> <input type="text" name="Last4" size="4" maxlength="4"><p> <input type="button" value="Convert to letters" onclick="compute(this.form)"> <p><input type="reset" value="Clear"> <table border=0> <tr> <td valign=top><br><br> <table border=1> <tr><td align=center>1=1</td> <td align=center>2=ABC</td> <td align=center>3=DEF</td> </tr> <tr> <td align=center>4=GHI</td> <td align=center>5=JKL</td> <td align=center>6=MNO</td> </tr> <tr> <td align=center>7=PRS</td> <td align=center>8=TUV</td> <td align=center>9=WXY</td> </tr> <tr> <td></td> <td align=center>0=0</td> <td></td> </tr> </table> </td> <td align=center> <p> <textarea name="TextArea1" rows=10 cols=10> </textarea> </td> <td valign=top><br><br> <table border=0> <tr> <td align=right>Computing</td> <td><input type="text" name="ComputingCombo" size="6"></td> </tr> <tr> <td align=right>of</td> <td><input type="text" name="ComboCount" size="6"></td> </tr> <tr> <td align=right>Completed</td> <td><input type="text" name="PctComplete" size="6">%</td> </tr> </table> </td> </tr> </table> </form> </center> <center> <b>Note:</B> When converting a number (e.g. 234-5678), you may <br> find it faster to convert 234-0000, then convert 000-5678. </center>     </table> </form> </FONT> </CENTER>   </center> </body></html>