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Home/ Questions/How to check if number is a whole number in javascript?
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Giovanni Thomas
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Giovanni Thomas
Asked: May 21, 20222022-05-21T18:28:28+00:00 2022-05-21T18:28:28+00:00In: javascript

How to check if number is a whole number in javascript?

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I want to check if number is a whole number in javascript but I am still a novice at Javascript, your suggestions would be much appreciated. Thank you.

♦ Suggestions of ITtutoria Team
Using javascript, you can check if a number is a whole number. The code below checks whether or not the value of the variable x is an integer.

Here is a case study for you

// The Number.isInteger() checks to see if the passed value is an integer
// Returns true or false
​
Number.isInteger(2); //True
Number.isInteger(90); //True
Number.isInteger("37"); //False
Number.isInteger(false); //false
whole number
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  1. Valerie Brown
    2022-05-21T18:28:31+00:00Added an answer on May 21, 2022 at 6:28 pm
    function hasDecimal (num) {
     return !!(num % 1);
    }
    hasDecimal(2) // true
    hasDecimal(2.345) // false
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