jquery getting html elements by type and class

I'm trying to get a list of link titles from a wikipedia page. I downloaded the HTML and now I'm trying to run some javascript/jquery code to get this going. Here's what开发者_如何学运维 I have so far...

var elements = $("ul > li");
alert(elements.length);
alert(elements.get(0).val());

The first alert gives me "505", which looks about right (there's quite a few of these elements).

My questions are how do I filter elements $("ul > li") by class name as well? Say the particular elements I want have class "class1".

The second alert doesn't give me anything, though elements.get(0) tells me object HTMLLIelement which is good I guess. So I'm not able to access a particular property that I want (say, 'title').

Thanks for the help guys.

My questions are how do I filter elements $("ul > li") by class name as well? Say the particular elements I want have class "class1".

It's all CSS selector syntax.

$("ul > li.class1")

The second alert doesn't give me anything, though elements.get(0) tells me "object HTMLLIelement" which is good I guess.

This is because .get() returns a plain DOM element, not a jQueryified one. Use .eq() instead:

elements.eq(0).val();
// to get the title:
elements.eq(0).prop('title');
// or if you're using jQuery <1.6,
elements.eq(0).attr('title');

if the (ul > li) element has 3 "a" (link) elements that I want, how do I get the first one?

Use :first or .first().

$("ul > li.className") should be all you need.

how do I filter elements $("ul > li") by class name as well?

$("ul > li.class1")

To get title attribute:

elements.eq(0).attr('title');