javascript - 根据JQuery中的计数为每个元素添加id

Question

<div class="tile_nav">
<ul>
<li><span class="ullevel2"><span>Sample text</span></span></li>
<li><span class="ullevel2"><span>Sample text</span></span></li>
<li><span class="ullevel2"><span>Sample text</span></span></li>
<li><span class="ullevel2"><span>Sample text</span></span></li>        
</ul>   
</div>


I have used

$(".tile_nav .ullevel2 span").attr('id', function(index) {
return "testDiv" + ($(this).index() + 1);
});

如何在页面加载时通过 jQuery 根据长度为每个元素添加 id？

Answer 1

您可以使用:

$('.span_group span').attr('id', function(idx){
    return 'span'+ idx;
});