Iterating JavaScript object with jQuery

Question

Here is my object that I want to parse through:

my.test = [{"Customer":
    {
        "id":"123",
        "Name":"john"
    }
}]

I have this already:

$.each(Cmy.test, function(index, value) {
    $.each(value.Customer, function(innerIndex, innerValue) {
        alert('File ' + innerValue.id + ' in customer ' + index);
    });
});

But my alert() shows undefined for value. What am I doing wrong?

Your JSON looks a little incomplete it seems its missing a }] at the end — John Hartsock
– John Hartsock, Commented Apr 20, 2011 at 0:12
Surely "$.each(Cmy.test..." is a typo and is actually "$.each(my.test..."? — openai_sucks
– openai_sucks, Commented Apr 20, 2011 at 0:12

VNO · Accepted Answer · 2011-04-20 00:43:22Z

4

my.test = [{"Customer":
{
"id":"123",
"Name":"john",
}

should be

my.test = [{"Customer": {
  "id":"123",
  "Name":"john"
}}];

then iterate like this:

$.each(my.test, function(index) {
  alert('File ' + my.test[index].Customer.id + ' in customer ' + index);
});

At least that's what I think you're looking for.

edited Apr 20, 2011 at 0:43

answered Apr 20, 2011 at 0:21

VNO

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2 Comments

user166390 Over a year ago

Check brace count on object literal.

Jared Farrish Over a year ago

Also, trailing comma of death is lurking...

user166390 · Accepted Answer · 2011-04-20 00:14:59Z

See jQuery.each -- when iterating over "non-array" objects the callback is passed (key, value).

For instance, in the above example the callback may be passed a key of "id" and a value of "123". As a result, "123".id (innerValue.id) is most likely nonsensical as it will evaluate to undefined.

The outer-loop is okay because (index, value) is passed in the callback for arrays. In this case the value is {Customer: ...}.

Happy coding.

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