Underscore.JS first方法

_.first(array, [n])

var _ = require('underscore');

var list = [1, 2, 3, 4, 5, 6]
//Example: get first element of a list
result = _.first(list);
console.log(result)

//Example: get first 3 elements of a list
result = _.first(list, 3);
console.log(result)

>node tester.js

1
[ 1, 2, 3 ]