How do you get elements from a javascript HTMLCollection

Question

I can't understand why I cant get elements from a HtmlCollection. This code example:

 var col = (document.getElementsByClassName("jcrop-holder"));
 console.log(col);

produces this output on console:

I'm trying to get the dic.jcrop-holder object but i cant get it from my variable col. None of this works:

  console.log(col[0]); // undefined
  console.log(col.item(0)); // null

  // check length of collection

  console.log(col.length); // 0

So if the length is 0 why does the console show a length of 1, as well as objects inside? When I open the node it contains children. What's going on?

Here are some expanded nodes. I didn't expand div.jcrop.holder because it is too long. Here are children elements:

Answer 1

Taken from : Can't access the value of HTMLCollection

The problem is you have placed the script in the header which gets executed before the html elements are loaded, so getElementsByClassName() will not return any elements.

One solution is to wait for the html elements to be loaded then execute your script, for that you can use the window objects load event

window.addEventListener('load', function () {
var eles = document.getElementsByClassName('review');
console.log(eles);
console.log(eles.length);
console.log(eles[0]);
})

Or you can place your script at the bottom of the body element instead of in head so that by the time the script is parsed and executed the elements are loaded in the dom