Write a program in java script using html that the given no.is prime or not.
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<!DOCTYPE html>
<html>
<head>
<title>JavaScript to find prime number or not!</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script>
function findPrime(){
//get the input value
var num = document.getElementById('num').value;
var c = 0;
//loop till i equals to $num
for (i = 1; i <= num; i++) {
//check if the $num is divisible by itself and 1
// % modules will give the reminder value, so if the reminder is 0 then it is divisible
if (num % i == 0) {
//increment the value of c
c = c + 1;
}
}
//if the value of c is 2 then it is a prime number
//because a prime number should be exactly divisible by 2 times only (itself and 1)
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
}else{
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
}
}
</script>
</head>
<body>
<h2>JavaScript to find Prime number or not!</h2>
<form method="post">
Enter a number: <input type="number" id="num" name="num" min="0" /><input type="button" value="Find Prime Number" onclick="findPrime()" name="find" />
<div style="margin-top: 10px;" id="result"></div>
</form>
</body>
</html>
<html>
<head>
<title>JavaScript to find prime number or not!</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script>
function findPrime(){
//get the input value
var num = document.getElementById('num').value;
var c = 0;
//loop till i equals to $num
for (i = 1; i <= num; i++) {
//check if the $num is divisible by itself and 1
// % modules will give the reminder value, so if the reminder is 0 then it is divisible
if (num % i == 0) {
//increment the value of c
c = c + 1;
}
}
//if the value of c is 2 then it is a prime number
//because a prime number should be exactly divisible by 2 times only (itself and 1)
if (c == 2) {
document.getElementById('result').innerHTML = num + ' is a Prime number';
}else{
document.getElementById('result').innerHTML = num + ' is NOT a Prime number';
}
}
</script>
</head>
<body>
<h2>JavaScript to find Prime number or not!</h2>
<form method="post">
Enter a number: <input type="number" id="num" name="num" min="0" /><input type="button" value="Find Prime Number" onclick="findPrime()" name="find" />
<div style="margin-top: 10px;" id="result"></div>
</form>
</body>
</html>
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