scrollTop, scrollLeft setters break chaining when selector doesn't match any elements

[[email protected]…]

The following line throws a javascript error:

$('.does-not-exist').scrollTop(0).scrollLeft(0);

The reason is that both scrollTop and scrollLeft always return null when the selector doesn't match any elements. They should only return null when used as getter (i.e. called without any arguments) Test case: ​http://jsfiddle.net/QZ6nH/1/

[dmethvin]

Yep, seems inconsistent.

[jitter]

Duplicate of #7931.

[anonymous]

Here's a pull request with the fix: ​https://github.com/jquery/jquery/pull/171