How to replace object's dynamic Key?

Question

I do have object like this:

var pdfObj = {2:"value1",4:"value2",13:"value3"};

I want above object like this:

var pdfObj = {pdf:"value1",pdfs:"value2",pdfd:"value3"}

I got all the values but only thing I'm confused about is how to replace object key for example "2" with "pdf" in the object?

Keys in above object is the ids of one of my DB table and now I want to display key and value into list page, for that I fetched the particular name of the id "2": "pdf" from table and now I'll looped the object to display into list page but for that I want to replace the key(2) into key(pdf) so I can easily loop the object and display the name and its value.

I found below link but it has fixed keys in the object http://stackoverflow.com/questions/6809659/changing-the-key-name-in-an-array-of-objects And I don't have any idea how to do that that's why I posted the question here :) — Dhaval, Jul 16 '14 at 07:05
What logic is their behind transposing `2` > `pdf`, `4` > `pdfs`, and `13` > `pdfd`? What if there is another value in the original object? — Rory McCrossan, Jul 16 '14 at 07:05
I've edited my question with explanation of the object. Please check — Dhaval, Jul 16 '14 at 07:09

score 0 · Answer 1 · answered Jul 16 '14 at 07:13

You can declare it directly like this:

pdfObj.pdf = pdfObj[2];
pdfObj.pdfs = pdfObj[4];
pdfObj.pdfd = pdfObj[13];

If you don't like there are duplicates, just create some temporary object, where you declare these keys and then just replace the new one with the old one:

var tmp = {};
tmp.pdf = pdfObj[2];
tmp.pdfs = pdfObj[4];
tmp.pdfd = pdfObj[13];
pdfObj = tmp;
tmp = null;

How to replace object's dynamic Key?

1 Answers1