Cut & Paste Decimal-to-Binary converter

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Cut & Paste Decimal-to-Binary converter

Credit: Philip M

Description: Looking back at when I was in college, there were many occasions when I had to convert decimal to binary numbers (especially on assignments). If only I had the following script! It's a decimal-binary converter that, well, converts decimal numbers to binary instead! As a bonus, it also converts from decimal to hex and octal as well.

Example: Enter a regular number to see it get converted into binary form!

Insert Decimal Number:

Directions: Simply cut and paste everything inside and paste it where you wish the converter to appear:

<b>Insert Decimal Number: </b><input type = "text" name = "deci" id = "deci" size = "15" maxlength = "15" /> <input type="button" value="Convert!" onclick="dec2bin()" /> <br><br> <div id = "result"></div> <script type = "text/javascript"> function dec2bin() { var x = document.getElementById("deci").value; if ((/[^0-9]/g.test(x)) || x == "") { alert ("You must enter an integer decimal number!"); document.getElementById("deci").value = ""; document.getElementById("deci").focus(); return false; } x = parseInt(x); var bin = x.toString(2); var hex = x.toString(16).toUpperCase(); var octal = x.toString(8); var figs = "The binary representation of " + x + " is " + bin + "<br>"; figs = figs + "The hexadecimal representation of " + x + " is " + hex + "<br>"; figs = figs + "The octal representation of " + x + " is " + octal + "<br>"; document.getElementById("result").innerHTML = figs; } </script> <p align="center"><font face="arial" size="-2">This free script provided by</font><br> <font face="arial, helvetica" size="-2"><a href="http://javascriptkit.com">JavaScript Kit</a></font></p>

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