1
<div class="span_group">
<span class="sp_main"><span>Sample text</span></span>
<span class="sp_main"><span>Sample text</span></span>
<span class="sp_main"><span>Sample text</span></span>
<span class="sp_main"><span>Sample text</span></span>
<span class="sp_main"><span>Sample text</span></span>
</div>
$(".span_group .sp_main span").each(function(index){
$(this).attr("id","span"+$(this).children("span").length);
});
荫尝试添加ID =“跨度+长”到 预期输出的孩子跨度是像下面的jQuery基于元素长度元素添加ID
<span class="sp_main"><span id="span1">Sample text</span></span>
<span class="sp_main"><span id="span2">Sample text</span></span>
<span class="sp_main"><span id="span3">Sample text</span></span>...
请帮
那你的错误是什么? – Varun