[英]How can I check a element by class name which has some classes
我需要检查是否有一个元素有一些 class 名称
例子
<div id="text1" class="myclass searchA searchB searchC">...</div>
<div id="text2" class="myclass searchB searchA searchC">...</div>
<div id="text3" class="myclass searchD searchB searchA">...</div>
<div id="text3" class="myclass searchX searchY searchZ">...</div>
我试图用这个来做,但它不会工作
var lookfor =".searchA.searchB";
console.log('id from div how matched the loorfor classes:'+$(".myclass").is(lookfor).attr('id'));
我也试过这个
console.log('id from div how matched the loorfor classes:'+$(".myclass").hasClass(lookfor).attr('id'));
附加说明:我正在寻找的课程的顺序每次都可能不同。 检查元素中的所有类是否只有一个也很重要。
我究竟做错了什么?
是否可以限制对 div 的搜索? 例子
<div id="firstdiv">
<div id="text1_first" class="myclass searchA searchB searchC">...</div>
<div id="text2_first" class="myclass searchB searchA searchC">...</div>
<div id="text3_first" class="myclass searchD searchB searchA">...</div>
<div id="text3_first" class="myclass searchX searchY searchZ">...</div>
</div>
<div id="scnddiv">
<div id="text1_scnd" class="myclass searchA searchB searchC">...</div>
<div id="text2_scnd" class="myclass searchB searchA searchC">...</div>
<div id="text3_scnd" class="myclass searchD searchB searchA">...</div>
<div id="text3_scnd" class="myclass searchX searchY searchZ">...</div>
</div>
现在我只想要scnd
div 中与我的lookfor
匹配的类。
而不是使用过滤器,只需直接使用选择器:
const id = $(".myclass.searchA.searchB").attr('id'); console.log('id from div which matched the classes: ' + id);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div id="text1" class="myclass searchA searchB searchC">...</div> <div id="text2" class="myclass searchB searchA searchC">...</div> <div id="text3" class="myclass searchD searchB searchA">...</div> <div id="text3" class="myclass searchX searchY searchZ">...</div>
对于您的问题的更新:
const id1 = $("#firstdiv.myclass.searchA.searchB").attr('id'); console.log('ID from the firstdiv that matched the classes: ' + id1); const id2 = $("#scnddiv.myclass.searchA.searchB").attr('id'); console.log('ID from scnddiv that matched the classes: ' + id2);
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div id="firstdiv"> <div id="text1_first" class="myclass searchA searchB searchC">...</div> <div id="text2_first" class="myclass searchB searchA searchC">...</div> <div id="text3_first" class="myclass searchD searchB searchA">...</div> <div id="text3_first" class="myclass searchX searchY searchZ">...</div> </div> <div id="scnddiv"> <div id="text1_scnd" class="myclass searchA searchB searchC">...</div> <div id="text2_scnd" class="myclass searchB searchA searchC">...</div> <div id="text3_scnd" class="myclass searchD searchB searchA">...</div> <div id="text3_scnd" class="myclass searchX searchY searchZ">...</div> </div>
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