具有两个数组的underscore.js

Question

I have the following array: 我有以下数组：

['aaa', 'bbb', 'ccc', 'ddd']

My goal is to remove from it unexpected values: 我的目标是从中删除意外的值：

I tried to do it with underscore without function like below: 我试图用without功能的下划线来做到这一点：

_.without(['aaa', 'bbb', 'ccc', 'ddd'], 'bbb', 'ccc');

It works fine, but unfortunately it does not work with array: 它可以正常工作，但不幸的是，它不适用于数组：

_.without(['aaa', 'bbb', 'ccc', 'ddd'], ['bbb', 'ccc']);

But in my case this one also does not work, namely it returns somthing like that: 但是在我的情况下，这也行不通，即返回如下内容：

"a","a","a"

when I tired to use apply function. 当我厌倦了使用Apply功能时。

Can some one suggest what need to be done to remove all unexpected keys with array? 有人可以建议删除数组中所有意外的键需要做什么吗？

Answer 1

您是否尝试过_.difference ？

_.difference(['aaa', 'bbb', 'ccc', 'ddd'], ['bbb', 'ccc']);

Answer 2

For the sake of completeness, that's how it can be done with _.without : 为了完整起见，使用_.without可以做到这_.without ：

var source = ['aaa', 'bbb', 'ccc', 'ddd'];
var blacklist = ['bbb', 'ddd'];
var without = _.without.apply(_, [source].concat(blacklist));