Decimal number to Hex value conversionWe can convert decimal to hexadecimal values in JavaScript by using toString() function. Here is the syntaxvariable.toString(radix);If radix is kept at 16 then the output will be in hexadecimal value. Here is an samplevar n1=12;
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| Related Tutorial |
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• IsNaN Checking a number • String to Number by parseInt |
The input variable must be an integer. So we will use paraseInt() function to convert any input to pure integer value.
We will also use isNan function to check the user input.
Demo of converting any decimal value to Hex
Here is the script of this demo<html>
<head>
<title>Demo of decimal to hexadecimal conversion</title>
<script language='JavaScript' type='text/JavaScript'>
<!--
function hex_convt(){
var n1=document.getElementById('t1').value;
if(isNaN(n1)){
document.getElementById("d1").innerHTML=document.getElementById('t1').value + " is not a number ";
}else{
n1=parseInt(n1);
document.getElementById("d1").innerHTML=n1.toString(16);
// Change the toString(16) to toString(8) or toString(2) get Octal and binary conversion
}
}
//-->
</script>
</head>
<body>
<input type=text name=t1 id='t1' size=8>
<input type=button name='SB' value='Change to Hex' onclick="hex_convt()";>
<div id=d1></div>
<br><br>
</body>
</html>
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