EN
JavaScript - get decimal part of float number
14 points
In this short article, we would like to show how to get the decimal part from a floating-point number using the modulo operator in JavaScript.
Practical example:
xxxxxxxxxx1
const getDecimalPart = value => {2
return value % 1.0;3
};4
5
6
// Usage example:7
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console.log( getDecimalPart( 5 ) ); // 09
console.log( getDecimalPart( 3.14 ) ); // ~0.1410
console.log( getDecimalPart( -3.14 ) ); // ~-0.1411
console.log( getDecimalPart( 0.123 ) ); // 0.12312
console.log( getDecimalPart( -0.123 ) ); // ~-0.12313
14
console.log( getDecimalPart( '+3.14' ) ); // ~0.1415
console.log( getDecimalPart( '-3.14' ) ); // ~-0.1416
console.log( getDecimalPart( NaN ) ); // NaN17
console.log( getDecimalPart( 'foo' ) ); // NaN18
console.log( getDecimalPart( -Infinity ) ); // NaN19
console.log( getDecimalPart( +Infinity ) ); // NaN