在ie6 / 7中未定义HTMLCollection？

Question

It seems that HTMLCollection and NodeList is undefined in ie6/7,and following code will result an error among ie6/7

alert(HTMLCollection)

then how to identify weather an object is HTMLCollection?

Answer 1

HtmlCollection is not available in IE 6/7. You would have to try to shim it as in create-a-htmlcollection or use some external library to deal with the problem (which is?)