jQuery：如何绑定同一个类的多个元素？

Question

I've created a div which I want to fill with a different embedded video based on which link within a series of links below that div gets clicked by a user. Currently, the function only works only for the top link in the list. Clicking on any of the links under the first produces no effect. Here's the JS:

$(document).ready(function(e){
$('a.videoBoxLinks').bind('click',function(e){
var vidUrl = $(this).attr('href');
var vidBox = $(this).prev('.videoBox');
vidBox.html('<iframe src="' + vidUrl + '" width="400" height="300" frameborder="0"></iframe>');
e.preventDefault(); //stops the browser click event
});
});

and the HTML

<div class="videoBox">
<h1>default content to be replaced</h1>
</div>
<a class="videoBoxLinks" href="videoURL1">Test 1</a></br> <!--this one works-->
<a class="videoBoxLinks" href="videoURL2">Test 2</a> <!--this one doesn't-->

Answer 1

Instead of

var vidBox = $(this).prev('.videoBox');

use

var vidBox = $(this).prevAll('.videoBox');

.prev will only find the immediately preceding sibling whereas .prevAll will find all preceding siblings.

Answer 2

You'll probably want to use delegate. Bind only binds a single event, whereas delegate just adds event listeners.

That should at least get you started.

Answer 3

I would do it like this

$('a.videoBoxLinks').bind('click',function(e){
    link = $(this);
    // if the iframe does not exists
    if ($('div.videoBox iframe').length == 0) {
        // create the iframe
        $('div.videoBox').html('<iframe width="400" height="300" frameborder="0"></iframe>');
    }
    // set the source of the iframe
    iframe = $('div.videoBox iframe').attr('src', link.attr('href'));
    e.preventDefault(); //stops the browser click event
});

Answer 4

Check the following code. It works for me.

HTML:

<div id="videoBox">
    <h1>
        default content to be replaced</h1>
</div>
<a class="videoBoxLinks" href="videoURL1">Test 1</a><br />
<!--this one works-->
<a class="videoBoxLinks" href="videoURL2">Test 2</a>

Script:

<script type="text/javascript">
    $(document).ready(function (e) {
        $('a.videoBoxLinks').bind('click', function (e) {
            var vidUrl = $(this).attr('href');
            //var vidBox = $(this).prev('.videoBox');
            $("#videoBox").html('<iframe src="' + vidUrl + '" width="400" height="300" frameborder="0"></iframe>');                
            e.preventDefault(); //stops the browser click event
        });
    });

</script>