Decimal number to Hex value conversionvariable.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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• 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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Math Functions in JavaScript
Math Functions Math Constants used JavaScript random() function to generate random numbersround() function to get rounded value of a numberIsNaN() function to check data if number or notceil() function to get just next higher integerfloor() function to get just highest lower integertoFixed() function to format decimal places of a numbertoPrecision() function to fix the places of a numberparseFloat() function to convert string to floating numberparseInt() function to convert string to numbermodulus % to get the reminder of a divisionpow to get the power of an integermax to get the highest integer from a set of numberabs to get the absolute value from any integersqrt to get square root of any numberlog to get the log value of numberexp to get E to the power of XMath conversion from one base to other for number systemMath conversion Decimal to Hexadecimal number system