Jquery merge two fields in JSON object

Question

I have a JSON object in JQuery that looks like:

["state":"06","population":9},{"state":"32","population":13},{"state":"01","population":4},

I want to end up with a JSON object like:

{"06":9,"32":13,"01":4}

How would I do this in JQuery?

Thanks!

Iterate over the array and copy the values into a new object? Don't really see the problem.. of course you have to first parse the JSON to a JavaScript array. Have a look at the MDN JavaScript Guide to learn the basics about how to work with arrays and objects: developer.mozilla.org/en/JavaScript/Guide — Felix Kling
– Felix Kling, Commented Apr 15, 2012 at 2:33

rjz · Accepted Answer · 2012-04-15 02:33:29Z

1

you would want to use the .each method. If my_array holds the original array you describe, this ought to do it:

var result = {};
$.each(my_array, function(index, val) {
  result[val.state] = val.population;
});

answered Apr 15, 2012 at 2:33

rjz

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3 Comments

rjz Over a year ago

(result ends up with the output you describe)

user236139 Over a year ago

Instead of having the arguments index, val, you can omit those and use result[this.state] = this.population. I'm not really sure which is better per se but I just figured I'd post this for completeness.

rjz Over a year ago

It's a good point. I'm in the habit of using the short syntax only when iterating over a jQuery collection and following forEach style (albeit in reverse—never got that!) for other types.

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