How to foreach into a multidimensional array with jQuery? Strange behaviour

That's not a multidimensional array, but an invalid code. Arrays and Objects (Hashes) are different things in JavaScript (and in most of the other languages) not as in PHP.

So at the top you should write the following:

var response = new Array();response[0] = new Object();response[1] = {}; // it's the same new Object()response[2] = new Object();

And you could iterate over it as you did:

$.each(response, function (index, obj) {    $.each(obj, function (key, value) {        console.log(key);        console.log(value);    });});

if you try: console.log(response) ... you'll see the array is empty, it seems the array is not well formed.

why don't you use JSON format instead?

var response = [{    "Id":"1",    "StreetAddress": "xxx",    "Place":"yyy"},{    "Id":"2",    "StreetAddress": "xxx2",    "Place":"yyy2"},{    "Id":"3",    "StreetAddress": "xxx3",    "Place":"yyy3"}]console.log(response);//you'll get an object: [Object { Id="1", StreetAddress="xxx", Place="yyy"}, Object { Id="2", StreetAddress="xxx2", Place="yyy2"}, Object { Id="3", StreetAddress="xxx3", Place="yyy3"}]//iterate overfor(var x=0; x < response.length; x++){    console.log("ID: " + response[x].Id + " StreetAddress: " + response[x].StreetAddress + " Place: " + response[x].Place);}

You should not use arrays like this in Javascript. Arrays are numerically indexed. If you write

response[1]["Id"] = 2; 

you are adding a property to response[1] array

EDIT - i've read a little better your coment. It states:

//FYI: The output is an array of key value pairs (e.g. response[0].Id), the keys being:

So you have an array of objects.

This maps the data you will receive.

var response = new Array;response[0] = new Object();response[1] = new Object(); response[2] = new Object();  response[0]["Id"] = 1;response[0]["StreetAddress"] = 'xxx';response[0]["Place"] = 'yyy';response[1]["Id"] = 2;response[1]["StreetAddress"] = 'xxx';response[1]["Place"] = 'yyy';response[2]["Id"] = 3;response[2]["StreetAddress"] = 'xxx';response[2]["Place"] = 'yyy';

and you can access them like this:

jQuery.each(response, function(key, value){         for (key2 in value[key]){            if (value[key].hasOwnProperty(key2)){            alert(mine[key2])            }         }     });