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How do i get all children (ie children of children) with Javascript?

I need a javascript function or a CSS Selector (or even a ProtoypeJS function) which gets me ALL elements (ie. descendants) under a particular element.

I understand there are CSS selectors such as : 'p, a, div', which would get me all the elements of those three types. However I need to get EVERYTHING without specifying type.

ie. I want something like 

myElement.getElements('*')
Solution

  • Compatible with all versions of IE, not just IE8+...

    myElement.getElementsByTagName("*")

    * is treated as a special case for getElementsByTagName to return all descendants regardless of tag name. (This is different to querySelectorAll, where * is a genuine selector that matches all elements)