How to find the remainder in javascript

In JavaScript, you can use the modulo operator "%" to find the remainder, the syntax is "a % b"; the modulo operator mainly performs remainder operations on integers, but it is also applicable to floating point numbers, for example "3.1 % 2.3".

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

In javascript, you can use modular arithmetic to find the remainder through the modulo operator "%". Example x = y % 2

console.log(3 % 2);  //返回余数1

Modulo operation mainly operates on integers, but also applies to floating point numbers. For example:

console.log(3.1 % 2.3);  //返回余数0.8000000000000003

Pay attention to the remainder operation of special operands.

var n = 5;  //定义并初始化任意一个数值
console.log(Infinity % n);  //返回NaN
console.log(Infinity % Infinity);  //返回NaN
console.log(n % Infinity);  //返回5
console.log(0 % n);  //返回0
console.log(0 % Infinity);  //返回0
console.log(n % 0);  //返回NaN
console.log(Infinity % 0);  //返回NaN

[Recommended learning: javascript advanced tutorial]

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