我的HTML如下。

 <div class="col-md-12 line">

   <span class="d1  available " seatid="515" seatname="A1"></span>

   <span class="d1  available " seatid="516" seatname="A2"></span>

   <span class="d1  available " seatid="555" seatname="A3"></span>

   <span class="d1  available " seatid="556" seatname="A4"></span>

   <span></span>

   <span class="d1  available " seatid="517" seatname="A5"></span>

   <span class="d1  available " seatid="518" seatname="A6"></span>

 </div>


当我单击跨度时,我想获得跨度的索引与所有其他具有相同类的跨度相比,

意思是..


单击上一个跨度之前,我需要索引为4


这是我现在要使用的代码。

var selector = $(this);
var selectIndex = selector.index();

最佳答案

您应该将当前元素传递给index()以从所有当前可用范围中获取其索引

因此您可以使用$("span.available").index($(this))获取索引

PS:避免直接在html标记上使用属性,就必须在座位ID和座位名称=>(data-seatid,data-seatname)中都使用data-,您可以通过在其中使用datasetdata()来访问它们jQuery的

见下面的片段



$(function() {
  $("span.available").on("click",function(){
    console.log("index : " + $("span.available").index($(this)) + " seatid: "+$(this).data('seatid') );
  })
})

span {
  display:block;
}

.as-console-wrapper {
  max-height:75px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="col-md-12 line">

  <span class="d1  available " data-seatid="515" data-seatname="A1">A1</span>

  <span class="d1  available " data-seatid="516" data-seatname="A2">A2</span>

  <span class="d1  available " data-seatid="555" data-seatname="A3">A3</span>

  <span class="d1  available " data-seatid="556" data-seatname="A4">A4</span>

  <span>empty</span>

  <span class="d1  available " data-seatid="517" data-seatname="A5">A5</span>

  <span class="d1  available " data-seatid="518" data-seatname="A6">A6</span>

</div>

关于javascript - 根据可用的类别获取跨度索引,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/48238808/

10-11 22:47
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