javascript 从数组中删除数组 [英] javascript remove array from array

问题描述

假设我们有以下数组:

a = [1, 2, 3, 4, 5]

和

b = [2, 3]

如何从 a 中减去 b?所以我们有 c = a - b 应该等于 [1, 4, 5] .jQuery 解决方案也可以.

How can I subtract b from a? So that we have c = a - b which should be equal to [1, 4, 5]. jQuery solution would also be fine.

推荐答案

假设您使用的浏览器具有 Array.prototype.filter 和 Array.prototype.indexOf，你可以使用这个:

Assuming you're on a browser that has Array.prototype.filter and Array.prototype.indexOf, you could use this:

var c = a.filter(function(item) {
    return b.indexOf(item) === -1;
});

如果有问题的浏览器没有这些方法，您可以填充它们.

If the browser in question does not have those methods, you may be able to shim them.

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