[removed] array.length returns undefined

Question

I have a set of data that is being passed on by the PHP\'s json_encode function. I\'m using the jQuery getJSON function to decode it:

Answer 1

One option is:

Object.keys(myObject).length

Sadly it not works under older IE versions (under 9).

If you need that compatibility, use the painful version:

var key, count = 0;
for(key in myObject) {
  if(myObject.hasOwnProperty(key)) {
    count++;
  }
}