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
This article is written by plus2net.com team.
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