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JavaScript code to check number is Perfect or not
In this JavaScript code, we are going to check whether a given number is perfect number or not.
Submitted by Aleesha Ali, on March 28, 2018
Perfect number
A number is said to be perfect when its value is equal to its sum of complete divisors.
Example of perfect numbers are: 6, 28, 496 etc
Example:
Input:
Number: 6
Output:
It is a perfect number
Explanation:
Divisors of 6 are: 1, 2, 3
Sum of the divisors is: 1+2+3 =6
JavaScript code to check whether a Number is Perfect or Not
<script>
function perfectNumber()
{
var flag,number,remainder,addition = 0,i;
number = Number(document.getElementById("N").value);
flag = number;
for(i = 0; i < number; i++)
{
remainder = number%i;
if(remainder==0)
{
addition += i;
}
}
if(addition == flag)
{
window.alert("-The inputed number is Perfect");
}
else
{
window.alert("-The inputed number is not Perfect");
}
}
</script>
Calling JavaScript function in HTML (HTML, JS Code)
<html>
<head>
<script>
function perfectNumber()
{
var flag,number,remainder,addition = 0,i;
number = Number(document.getElementById("N").value);
flag = number;
for(i = 0; i < number; i++)
{
remainder = number%i;
if(remainder==0)
{
addition += i;
}
}
if(addition == flag)
{
window.alert("-The inputed number is Perfect");
}
else
{
window.alert("-The inputed number is not Perfect");
}
}
</script>
</head>
<body>
<br>
<h1>Whether a number is Perfect or not</h1>
Enter The Number :<input type="text" name="n" id = "N"/>
<hr color="cyan">
<br>
<center><button onClick="perfectNumber()">CHECK</button>
</body>
</html>
Output
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