使用 underscore.js 从两个数组中查找 A - B [英] Finding A - B from two arrays using underscore.js

问题描述

我必须从 javascript 中的数组中过滤掉某些元素，并为此考虑使用 underscore.js.因为我是新手，所以感谢一些帮助.请参考下面的代码，我必须找到 A \ B 并将结果分配给 C .underscore.js 是否有任何方便的方法来做到这一点?

I have to filter out certain elements from an array in javascript and thought of using underscore.js for this purpose. As I am new to it,some help is appreciated.Please refer the code below , I have to find A \ B and assign the result to C . Does underscore.js has any convinience method to do that ?

function testUnderScore(){
    alert("underscore test");
    var a = [84, 99, 91, 65, 87, 55, 72, 68, 95, 42];
    var b = [ 87, 55, 72,42 ,13];
    var c = [];

    alert(c);
}

推荐答案

通过使用difference方法:

var c = _.difference(a, b);

http://documentcloud.github.com/underscore/#difference

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