animate: "val is undefined" when animating to an appended element

[Okko]

The fx.js's animate function does not check that the propertys value is defined before calling its toString method.

52 animate: function( prop, speed, easing, callback ) {

..

79 jQuery.each( prop, function(name, val){

..

85 var parts = val.toString().match(/^{([+-]=)?([\d+-.]+)(.*)$/),}

Test case: ​http://www.frantic.com/okko/jquery/bug-scroll/

It will produce

"val is undefined

var parts = val.toString().match(/^{([+-]=)?([\d+-.]+)(.*)$/),"}

[flesler]

The test case says:

$('div class="....

You're missing the opening <.

[Okko]

That is true, adding it fixed the error. Thank you.

Should we close this bug or should jQuery be improved so that it can cope with this?

[flesler]

Nope. It's not a bug, just a typo. The html string that you give jQuery must be valid xhtml.