使用自定义函数在lodash中创建链 [英] Create chain in lodash with custom functions

问题描述

有没有办法在lodash链中获得我自己的自定义函数.因此，例如:

Is there way to get my own custom function in a chain of lodash. So for example like this:

var l = [1,2,3]
var add = function(a, b){return a+b}

var r =_.chain(l).find(function(a){return a>1}).add(5).value()

=>r = 7

推荐答案

您要寻找的是扩展lodash原型的方法.事实证明，您可以使用mixin实用程序功能轻松完成此操作.在这里检查文档: http://lodash.com/docs#mixin

What you look for is a way to extend the lodash prototype. It so nicely turns out that you can do it easily with a mixin utility function. Check here the docs: http://lodash.com/docs#mixin

在您的示例中，它看起来像:

In your example it will look like:

var l = [1,2,3];
var  add = function(a, b){return a+b}


_.mixin({
    add: add 
});


var r =_.chain(l).find(function(a){return a>1}).add(5).value()
console.log(r); ==> 7

这是小提琴上的实时示例: http://jsfiddle.net/g2A9C/

and here is live sample on fiddle: http://jsfiddle.net/g2A9C/

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