datalist polyfills review about html5please

[chriscoyier]

Thanks for the research!

Couple notes on "rd" (Relevant Dropdowns).

My intention is to leave feature detection using Modernizr. Modernizr has beefed up their detection for datalists (Modernizr.input.list) so that browser sniffing bit can be removed. (You were a part of that discussion: Modernizr/Modernizr#146)

For option parsing, I'm pretty sure Respnsive Dropdowns supports your #1, #3, and #4, but I just opened your demo of it in IE 7 and it supported #2 as well, so maybe it's just IE 6 that can't handle #2. I personally think that's a fine level of support.

For performance, Responsive Dropdowns uses the document fragment thing already. Maybe more can fit into the document fragment before adding?

There is a couple of other small things too like using offset and using mousedown. That's all fine with me, just shoot over a pull request and I'm happy to take a look and merge it.

[aFarkas]

@chriscoyier

No, problem. I think, rd datalist could be a really good markup polyfill.

About the parsing problem.

In fact, it renders all examples, but in case of 3 and 4 the label (explicit/implicit) has to be shown to the user.

document fragement

Yes, I saw that you are using this technique. But I mean the following line, wich means, that you are creating one li-dom-object per option. If you would concat those li's to a string including the parent ul and simply use jQuery to create the DOM. jQuery would use one DOM-operation to create all li-elements at once.