JavaScript functions to display factors of an input number

Factors are numbers which divide the number evenly.

Factors of 12 are 1, 2, 3, 4, 6, 12
Factors ( of a number ) are numbers which when divide the number they leave 0 as reminder

Enter a number here

Output here

<html>
<head>
<title></title>
</head>
<body>
<input type="text" name="t1" id="t1">
<input type="button" value="Submit" onclick="factor()">
<div id=d1></div>
<script type="text/javascript">
function factor(){
x=document.getElementById("t1").value
x=parseInt(x)
if(Number.isInteger(x)){
str='';
//Highest divisor can be less than half of the input number
x1=Math.ceil(x/2)
for(i=2;i<=x1;i++){
if(x%i==0){
str = str + i + ',' 
}
}
document.getElementById('d1').innerHTML="Factors are:  " + str
}else{
document.getElementById('d1').innerHTML="Enter an Integer  "	
}	
}
</script>
</body>
</html>

isInteger()	Checking if input number is integer or not
parseInt()	function to convert string to number

Next lower value of any decimal number JavaScript Basic JavaScript variable
JavaScript Math Reference

Subhendu Mohapatra

Author & Instructor at plus2net

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Factors of an input number

Subhendu Mohapatra