jQuery comma separated string to object map

Question

After long hours of work I figured out how to get my ajax value. It looks like this:

37,58,82,

I managed out how to remove last comma and make array like this:

Object { 0="37", 1="58", 2="82"}

But I need it to be like this (according to firebug):

[Object { trackID="track-id-37"}, Object { trackID="track-id-58"}, Object { trackID="track-id-58"},]

How can I make it to look like?

What code did you use to transform 37,58,82, into Object { 0="37", 1="58", 2="82"}? — Nightfirecat
– Nightfirecat, Commented Oct 21, 2013 at 21:46

struthersneil · Accepted Answer · 2013-10-21 21:59:03Z

Here you go. If you have your array, you can call $.map on it.

$.map(["37", "58", "82"], function(elem) { return { trackID: "track-id-" + elem }; });

Or let's say your string is called your_string...we can act directly on it (I've added whitespace to make it clear what's going on)--

your_string = '37,58,82,';
$.map(your_string.split(','), function(elem) 
                              { 
                                if (elem != '') 
                                { 
                                   return { trackID: "track-id-" + elem }; 
                                } 
                              });

The if (elem != '') statement is to protect against any empty array values after the split(','). $.map tolerates return values of undefined.

Also consider using $.trim on elem in order to build in tolerance for spaces and so on, e.g.

$.map(your_string.split(','), function(elem) 
                              { 
                                var id = $.trim(elem);
                                if (id != '') 
                                { 
                                   return { trackID: "track-id-" + id }; 
                                } 
                              });

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