Prime Numbers upto the input number
These are the first 5 prime numbers 2, 3, 5, 7, 11
Prime numbers are divisible by exactly two natural numbers.
Enter any number
Output here
<html>
<head>
<title></title>
</head>
<body>
<input type="text" name="t1" id="t1">
<input type="button" value="Submit" onclick="show_prime()">
<div id=d1></div>
<script type="text/javascript">
function show_prime(){
x=document.getElementById("t1").value
x=parseInt(x)
if(Number.isInteger(x)){
str='';
for (i=2;i<x;i++){
flag=0;
for(j=2;j<i;j++){
if(i%j == 0){
flag=1;
break;
}
}
if(flag==0){
str= str + i + ","
}
}
document.getElementById('d1').innerHTML="Series is : " + 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 |
JavaScript Math Reference
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This article is written by plus2net.com team.
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