attr('selectedIndex') Not Working with FF in 1.6.2 RC1

[sradoff@…]

$(this).attr('selectedIndex') not working in FF where $(this) is a change event from a select control. Returns undefined. Works with IE6. Works OK with 1.5.1.

[ajpiano]

selectedIndex is not an attribute.

[ajpiano]

Duplicate of #9088.

[sradoff@…]

Why is the selectedIndex not an attribute? When I examine the javascript definitions it shows selectedIndex is a property of a select object. How come $(this).attr('selectedIndex') works in 1.5 but not in 1.6.2 RC1? If selectedIndex is not an attribute as claimed then how would one retrieve the selected index of a select control?

[dmethvin]

Why is the selectedIndex not an attribute?

Because it is a *property*.

When I examine the javascript definitions it shows selectedIndex is a property of a select object.

Yes, you are correct, it is a property.

How come $(this).attr('selectedIndex') works in 1.5 but not in 1.6.2 RC1?

We fixed a bug.

If selectedIndex is not an attribute as claimed then how would one retrieve the selected index of a select control?

Use $(this).prop("selectedIndex") or (even better) this.selectedIndex which is probably more than 100 times faster to execute.

[timmywil]

@sradoff Sorry for the confusion. selectedIndex is a property and should never have been retrieved with attr, even though it admittedly did retrieve it. Since 1.6, jQuery has a function for retrieving native properties such as selectedIndex( http://api.jquery.com/prop), but in the past (and this continues to be true) selectedIndex could simply be retrieved with raw javascript:

this.selectedIndex

DaveMethvin ganked me, but I'll post anyway.