Underscore.JS invoke方法

_.invoke(list, methodName, *arguments)

var _ = require('underscore');

var list = [[1, 3, 2, 5],[4, 6, 1, 2]]
//Example 1. invoke join method on each element of list
var result = _.invoke(list, 'join');
console.log(result);

//Example 2. invoke join method on each element of list
var result = _.invoke(list, 'join', ' # ');
console.log(result);

>node tester.js

[ '1,3,2,5', '4,6,1,2' ]
[ '1 # 3 # 2 # 5', '4 # 6 # 1 # 2' ]