How to get ID of clicked element with jQuery

问题

I have the following html:

<a href="#" id="#1" class="pagerlink" >link</a>
<a href="#" id="#3" class="pagerlink" >link</a>
<a href="#" id="#2" class="pagerlink" >link</a>
/*etc.... */

and the following jQuery script:

$(document).ready(function() {

    var $container = $('.gallery_r').cycle({ 
        fx:     'scrollHorz', 
        speed:   500, 
        timeout: 0 
    }); 

    $('a.pagerlink').click(function() { 
        var id = $(this).attr('id');
        $container.cycle(id); 
        return false; 
    }); 

});

the 'pagerlink' links control are to jQuery Cycle slideshow. If I swap this line:

$container.cycle(id);

for this

$container.cycle(7);

it works... (obviously only navigating to slide number 7). So, my question is how can I pick up the ID of the link being clicked and pass it into that line?

Thanks in advance!

回答1:

Your IDs are #1, and cycle just wants a number passed to it. You need to remove the # before calling cycle.

$('a.pagerlink').click(function() { 
    var id = $(this).attr('id');
    $container.cycle(id.replace('#', '')); 
    return false; 
});

Also, IDs shouldn't contain the # character, it's invalid (numeric IDs are also invalid). I suggest changing the ID to something like pager_1.

<a href="#" id="pager_1" class="pagerlink" >link</a>

$('a.pagerlink').click(function() { 
    var id = $(this).attr('id');
    $container.cycle(id.replace('pager_', '')); 
    return false; 
});

回答2:

You just need to remove the hash from the beginning:

$('a.pagerlink').click(function() { 
    var id = $(this).attr('id').substring(1);
    $container.cycle(id); 
    return false; 
});

回答3:

Your id will be passed through as #1, #2 etc. However, # is not valid as an ID (CSS selectors prefix IDs with #).

回答4:

First off you can't have just a number for your id unless you are using the HTML5 DOCTYPE. Secondly, you need to either remove the # in each id or replace it with this:

$container.cycle(id.replace('#',''));

来源：https://stackoverflow.com/questions/7838238/how-to-get-id-of-clicked-element-with-jquery

标签

jquery

jquery-cycle