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Object.keys(), Object.values()

JavaScript

Posted at 2012-03-20

これだけのために UnderScore.js をincludeするのもなぁと思って自作。

Object.prototype.values = function(){var o=this;var r=[];for(var k in o) if(o.hasOwnProperty(k)){r.push(o[k])}return r};
Object.prototype.keys   = function(){var o=this;var r=[];for(var k in o) if(o.hasOwnProperty(k)){r.push(  k )}return r};

Usage

var obj = {key1: 'foo', key2: 'bar'};
obj.keys();   //=> ["key1", "key2"]
obj.values(); //=> ["foo", "bar"]

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