Underscore.JS isEmpty方法

_.isEmpty(object)

var _ = require('underscore');

//Example 1: Check if object is empty
var result = _.isEmpty({});
console.log(result);

//Example 2: Check if string is empty
result = _.isEmpty("");
console.log(result);

//Example 3: Check if array is empty
result = _.isEmpty([]);
console.log(result);

>node tester.js

true
true
true