获取跨度索引(如果基于可用的类)

Question

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，我想获取跨度与具有相同类的所有其他跨度进行比较的索引，

这意味着..

1. 在最后一个跨度之前单击我需要索引为 4

这是我现在使用的代码。

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

Answer 1

您应该将当前元素传递给 index(( 以从所有当前可用范围获取它的索引

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

PS：避免直接在你的html标签上使用属性，你必须同时使用data-对于seatid和seatname=>(data-seatid，data-seatname(，你可以使用数据集或jquery中的data((来访问它们

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>

Answer 2

var selectIndex = selector.parent().children('span.available').index(selector);