getElementsByClassName isn't implemented on typeof Element

[LPGhatguy]

MDN leads me to believe that getElementsByClassName should be a valid member of any Element (and every browser I've tested leads me to the same conclusion).

Here's the source documentation that I'm trying to write an application using.

I've tested this with TypeScript 1.5.3 (via the ST plugin's language services) and the latest 1.6-dev.

[mhegazy]

@zhengbli can you take a look?

[saschanaz]

Related to #3220?

[zhengbli]

It is a spec error. Indeed the getElementsByClassName should be defined in Element instead of HTMLElement.

[S-YOU]

I am not sure typescript support IE8, but as far as I remembered, it doesn't have on every element, but on document.

[LPGhatguy]

There's no issue targeting IE8 even with typing definitions from modern browsers -- not having the definitions simply makes targeting browsers released in the past 6 years more difficult.