Referring to object via variable

Question

My object is as below

var masterData = {      
    "region":[
            {"key":"1","value":"AMS"},
            {"key":"2","value":"APJ"},
            {"key":"3","value":"EMEA"}
    ]
};

var key = 'region';
var strList = 'masterData.'+key;

$.each($(strList), function(i, row) {
    alert(row.key); 
});

It's not entering the loop, but if I replace the variable with the actual object, it works. For example:

$.each($(masterData.region), function(i, row) {
    alert(row.key);     
});

I want to do the same via a variable, like the first one. What am I missing here?

This is **not** JSON. This is an object literal. Unfortunately many people make the mistake to confuse object literals with JSON. See [There is no such thing as a "JSON object"](http://benalman.com/news/2010/03/theres-no-such-thing-as-a-json/). — Felix Kling, Aug 02 '13 at 15:47

score 4 · Answer 1 · answered Aug 02 '13 at 15:37

4

Since an object is considered an associative array, properties can be accessed by key in this manner:

var key = 'region';
var strList = masterData[key];

Good Overview of Objects as Associative Arrays

answered Aug 02 '13 at 15:37

Kevin Bowersox

90,944
18
150
184

score -1 · Accepted Answer · answered Aug 02 '13 at 15:41

-1

this worked

    $.each($(eval(strList)), function(i, row) {
    alert(row.key);     
    });

answered Aug 02 '13 at 15:41

user1447718

641
1
9
22

2

I don't think they should use `eval` for this, its really unnecessary. – Kevin Bowersox Aug 02 '13 at 15:42

Referring to object via variable

2 Answers2