Underscore.JS invert方法

_.invert(object)

var _ = require('underscore');
// Example 1
var result = _.invert({one: 1, two : 2, three: 3});
console.log(result);

// Example 2
result = _.invert({ name: 'Sam', age: 30});
console.log(result);

>node tester.js

{ '1': 'one', '2': 'two', '3': 'three' }
{ '30': 'age', Sam: 'name' }