Expression Solver

Just enter a math expression (with +, -, *, and / signs) and this script will evaluate the expression for you. Who needs a calculator when you have JavaScript. ;-)

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JavaScript Source Code 3000: Calculators: Expression 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 Apple-s). The script is yours!!!

<!-- TWO STEPS TO INSTALL EXPRESSION SOLVER: 1. Copy the coding into the HEAD of your HTML document 2. Add the last code into the BODY of your HTML document --> <!-- STEP ONE: Paste this code into the HEAD of your HTML document --> <SCRIPT LANGUAGE="JavaScript"> <! > <! > <!-- Begin function calc(form) { form.result.value=eval(form.expr.value); } // End --> </SCRIPT> <!-- STEP TWO: Copy this code into the BODY of your HTML document --> <center> <i>Enter a math expression and click "Calculate" !</i> <br> <br> <form> <table border=3 cellspacing=2 cellpadding=5> <tr> <td align=center><i>Equation</i></td> <td align=center><i>Result</i></td> </tr> <tr> <td align=center><input type=text name=expr size=15></td> <td align=center><input type=text name=result size=15></td> </tr> <tr> <td colspan=2 align=center><input type=button value="Calculate!" onclick="calc(this.form)"></td> </tr> </table> </form> </center> <!-- Script Size: 1.09 KB -->