EN
JavaScript - number has decimal part
8 points
In this short article, we would like to show how to check if number has decimal part using JavaScript.
Practical example:
xxxxxxxxxx1
const hasDecimalPart = value => {2
return isFinite(value) && (value % 1.0 !== 0);3
};4
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// Usage example:7
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console.log(hasDecimalPart( 5 )); // false9
console.log(hasDecimalPart( 3.14 )); // true10
console.log(hasDecimalPart( -3.14 )); // true11
console.log(hasDecimalPart( 0.123 )); // true12
console.log(hasDecimalPart( -0.123 )); // true13
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console.log(hasDecimalPart( '+3.14' )); // true15
console.log(hasDecimalPart( '-3.14' )); // true16
console.log(hasDecimalPart( NaN )); // false17
console.log(hasDecimalPart( 'foo' )); // false18
console.log(hasDecimalPart( -Infinity )); // false19
console.log(hasDecimalPart( +Infinity )); // false