Round off a number to the next multiple of 5 using JavaScript

In this article, we are given a positive integer n and the task is to round the number to the next whole number divisible by 5.  There are various methods to Round off a number to the next multiple of 5 using JavaScript:

• Using Math.ceil() method
• Using Math.floor() method

Examples:

Input : 46 Output : 50 Input : 21 Output : 25 Input : 30 Output : 30

Approach 1:

• Take the number in a variable.
• Divide it by 5 and get the decimal value.
• Take the ceil value of the decimal value by using math.ceil().
• Multiply it by 5 to get the result.

Example:

<script>  function round(x) {  return Math.ceil(x / 5) * 5;  }    var n = 34;  console.log(round(n)); </script> 

Output:

35

Approach 2:

• Take the number in a variable.
• If it is divisible by 5, return the same number.
• Else divide it by 5, take the floor value and again multiply it by 5 and add 5 as well.

Example:

<script>  function round(x) {  if (x % 5 == 0) {  return (Math.floor(x / 5)) * 5;  } else {  return ((Math.floor(x / 5)) * 5) + 5;  }  }    var n = 34;  console.log(round(n)); </script> 

Output:

35