Get all keys of a JavaScript object

Question

I was wondering if there was a quick way to extract keys of associative array into an array, or comma-separated list using JavaScript (jQuery is ok).

options         


        

Answer 1

You can use $.each() in jQuery:

function keyArray(obj) {
  var rv = [];
  $.each(options, function(key) { rv.push(key); });
  return rv;
}

then

var keys = keyArray(options);

gives you ["key1", "key2"] as an array, which you could join to get a string.