<span>如果我使用jQuery有div</span>的编号，如何获取a的编号<span>？</span>

Question

i am having "div" which contains span so i want id of that particular span

<div id="status-0" class="abc">
    <span id="span_id" class="xyz" title="Enabled">&nbsp;</span>
</div>                                                                                         So how to get id of span with jquery?   and after some action i want to change class of that span using id, how to do that?

Answer 1

你可以做这样的事情

var id = $("div span").attr("id");

Answer 2

You can use this:

var id = $('div span').attr('id');

It uses CSS selector(descendant) and apply the attribute function on the matching element.

If you have data on the div you can use it to narrow the results:

var id = $('#status-0 span').attr('id');

Changing class is with:

.attr('class', 'value');

Adding class is with:

.addClass('value');

Answer 3

You need to assign the some id / class to div or span to make it more precise selection. If it is not possible you can use parent child selector.

id = $('div > span').attr('id'); // span is direct child

or

id = $('div span').attr('id'); // span is descendant

Answer 4

var spanID = $("#yourdivid span").attr("id") ;

Answer 5

您可以使用该div ID获取跨度的ID

var id = $('#div').find('span').attr('id');

Answer 6

if you know the index of the span under the div better use with eq . you can use nth-child also instead of eq .

$('$yourDivID span:eq(<<index>>)').attr('id');

In other case if you have the class of the span you can try the following

$('$yourDivID span.spanClass').attr('id');