javascript 检查值是否是 10 的倍数

Check if value is multiple of 10

提问by user1937021

I want to check if a value is a multiple of a certain number, for example, multiples of 10, but I also want to be able to change it to whatever I want.

我想检查一个值是否是某个数字的倍数，例如 10 的倍数，但我也希望能够将其更改为我想要的任何值。

if (directWinner == 10){

}

回答by adeneo

You'd use the modulus operator for that :

您可以为此使用模数运算符：

if (directWinner % 10 === 0){
    directWinner = 20;
}

Added a small dose of jQuery for no good reason at all ?

无缘无故地添加了少量的 jQuery？

$.modu = function(check, against) {
    return check % against === 0;
}

if ( $.modu(directWinner, 10) ) {
    directWinner = 20;
}

回答by Bergi

You'd use the modulooperator %for that:

您可以为此使用模运算符%：

var certainNumber = 10;
if (directWinner % certainNumber === 0) {
    // directWinner is a multiple of certainNumber
}

回答by Alnitak

Use the modulo operator (assuming positive integers) :

使用模运算符（假设为正整数）：

if (directWinner % 10 === 0) {
    ...
}