How to iterate over every property of an object in javascript?

Posted by OverloadUT on Stack Overflow See other posts from Stack Overflow or by OverloadUT
Published on 2009-02-25T21:15:42Z Indexed on 2010/04/24 3:23 UTC
Read the original article Hit count: 230

Filed under:

prototype

|

JavaScript

Is there a way to iterate over every property of an object using the Prototype JavaScript framework?

Here's the situation: I am getting an AJAX response in JSON that looks something like this:

{foo: 1, bar: 2, barobj: {75: true, 76: false, 85: true}}

If I evaluate that json response in to a variable response, I want to be able to iterate over each property in the response.barobj object to see which indexes are true and which are false.

Prototype has both Object.keys() and Object.values() but oddly seems to not have a simple Object.each() function! I could take the results of Object.keys() and Object.values() and cross-reference the other as I iterate through one, but that is such a hack that I am sure there is a proper way to do it!

© Stack Overflow or respective owner

Related posts about prototype

Relation between [[Prototype]] and prototype in JavaScript

as seen on Stack Overflow - Search for 'Stack Overflow'
From http://www.jibbering.com/faq/faq_notes/closures.html : Note: ECMAScript defines an internal [[prototype]] property of the internal Object type. This property is not directly accessible with scripts, but it is the chain of objects referred to with the internal [[prototype]] property that is… >>> More
'click' observer in Prototype

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a page which contains several divs (each with a unique ID and the same class, 'parent'). Underneath each "parent" div, is a div with class "child" and unique ID name -child. This DIV is upon page load empty. Whenever you click on a parent DIV, the following code is executed. $$('div.parent')… >>> More
Javascript: prototype of Number

as seen on Stack Overflow - Search for 'Stack Overflow'
var x= 1; Number.prototype.test = function () { return this }; x.test() === x.test() // false Why does the === test return false? >>> More
equivalent of jQuery's "load" in prototype

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I am trying to find an equivalent for the following jQuery javascript: var x1 = setInterval(function() { $('#status').load("processor.php", {value:'name'} );}, 5000 ); I need to use Prototype for other applications on the page, and when I throw both jQuery and Prototype libraries in there… >>> More
Misunderstanding I have about javascript prototype inheritance

as seen on Stack Overflow - Search for 'Stack Overflow'
Simple questions. function p() { function A() { this.random = "random"; } A.prototype.newfunc = function(){ alert("5");} function B() { } B.prototype = new A(); var bObj = new B(); } Q1: When I… >>> More

Related posts about JavaScript

CHAT ROOMs 7 by 6

as seen on Stack Overflow - Search for 'Stack Overflow'
I am looking for chatroom on one page with 7 loggedin users and 6+rows for say 42 users.these users will keep on adding wthnew users.Need urgent help.A PRETTY UNUSUAL Q FOR MOST OF U.What is MORE REQ new features: Usernames are unique to users currently chatting You can see a "currently chatting"… >>> More
Integrating JavaScript Unit Tests with Visual Studio

as seen on Stephen Walter - Search for 'Stephen Walter'
Modern ASP.NET web applications take full advantage of client-side JavaScript to provide better interactivity and responsiveness. If you are building an ASP.NET application in the right way, you quickly end up with lots and lots of JavaScript code. When writing server code, you should be writing… >>> More
Has Javascript developed beyond what it was originally designed to do?

as seen on Programmers - Search for 'Programmers'
I've been talking with a friend about the purpose of Javascript, when and how it should be used, etc. He quoted that: JavaScript was designed to add interactivity to HTML pages [...] JavaScript gives HTML designers a programming tool HTML authors are normally not programmers… >>> More
PHP, javascript, single quote problems with IE when passing variable from ajax post to javascript fu

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi! I have been trying to get this to work for a while, and I suspect there's an easy solution that I just can't find. My head feels like jelly and I would really appreciate any help. My main page.php makes a .post() to backend.php and fetches a list of cities which it echoes in the form of: <li… >>> More
Javascript in XSL that is loaded by Javascript

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there anyway to have javascript run when a XSL sheet has been applied to an XML file by Javascript? I am using a JQuery plugin to apply the sheet to the xml but the javascript that is located inside of the XSL file will not run. I put the Javascript at the bottom of the file and it still does… >>> More