Round

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!!!

<!-- TWO STEPS TO INSTALL ROUND: 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 round(number,X) { // rounds number to X decimal places, defaults to 2 X = (!X ? 2 : X); return Math.round(number*Math.pow(10,X))/Math.pow(10,X); } // End --> </SCRIPT> <!-- STEP TWO: Copy this code into the BODY of your HTML document --> <script> document.write( round(1,2) + '<br>'); document.write( round(1.2,2) + '<br>'); document.write( round(1.23,2) + '<br>'); document.write( round(1.234,2) + '<br>'); document.write( round(1.2345) + '<br>'); </script> </font></td></tr> </table> </form> </FONT> </CENTER> </center> </body></html>