does document.getElementsByTagName work in vbscript?

问题:

Well, it works, it just doesn't produce anything worthwhile:

elems = document.getElementById("itemsTable").getElementsByTagName("TR")  for j = 0 to ubound(elems) - 1          ' stuff  next 

Well, that won't work, apparently elems is an object, not an array like you'd get in that fancy javascript. I'm stuck with vbscript though.

So what do I do to iterate all the rows in a table in vbscript?

Edit: Yes, it's vbscript and it sucks. I don't have a choice here, so don't say "Use jQuery!!".

回答1:

As you have correctly stated getElementsByTagName does not return an array, hence UBound() will not work on it. Treat it as a collection.

For-Eaching through it should work:

 Set NodeList = document.getElementById("itemsTable").getElementsByTagName("TR")   For Each Elem In NodeList   ' stuff    MsgBox Elem.innerHTML  Next 

回答2:

If you have IE8+, you can use the "item" method. So it'd be:

Dim elem: Set elem = document.getElementById("itemsTable").getElementsByTagName("TR").item(1); 

回答3:

elems isn't an array in JavaScript either, it is a NodeList, it just happens to share some properties with a JavaScript Array object.

I don't know VB, but I assume you could do:

for j = 0 to elems.length - 1          ' stuff  next 

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