JavaScript: document.evaluate() problem

Question

I am trying to get all objects but it doesn't work.

var tmp = document.evaluate("//tr", document, null, XPathResult.ANY_TYPE, null);

tmp.iterateNext returns me null;

Answer 1

If you are working in IE, then you should know that document.evaluate does not exist there (see this similar question and the last couple of paragraphs here).

Why not just document.getElementsByTagName("tr");?

Answer 2

In my opinion, using an existing JS libraries such as JQuery is usually more reliable in cases like this.