Unique element ID, even if element doesn't have one

Question

I\'m writing a GreaseMonkey script where I\'m iterating through a bunch of elements. For each element, I need a string ID that I can use to reference that element later. The

Answer 1

You can set the id attribute to a computed value. There is a function in the prototype library that can do this for you.

http://www.prototypejs.org/api/element/identify

My favorite javascript library is jQuery. Unfortunately jQuery does not have a function like identify. However, you can still set the id attribute to a value that you generate on your own.

http://docs.jquery.com/Attributes/attr#keyfn

Here is a partial snippet from jQuery docs that sets id for divs based on the position in the page:

  $(document).ready(function(){

    $("div").attr("id", function (arr) {
          return "div-id" + arr;
        });
  });