[removed] Getting all existing keys in a JSON array

Question

I have a JSON array like below:

var jsonArray = [{\"k1\":\"v1\"},{\"k2\":\"v2\"},{\"k3\":\"v3\"},{\"k4\":\"v4\"},{\"k5\":\"v5\"}]

I don\'t

Answer 1

Try this:

jsonArray.reduce(function(keys, element){ 
    for (key in element) {
       keys.push(key);
    } 
    return keys; 
},[]);

This should also work for multiple keys in the array objects.

If you're supporting old browsers that don't have reduce and map, then consider using a shim.