Question

我的HTML如下所示。

 <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>

当我点击跨度时，我希望获得跨度索引与具有相同类别的所有其他跨度相比，

这意味着......

点击最后范围之前我需要索引 4

这是我现在要使用的代码。

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

Answer 1

你应该将当前元素传递给index()，以便从当前所有可用范围中获取它的索引

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，你必须使用data-作为seatid和seatname =＆gt; （data-seatid，data-seatname），您可以在jquery中使用dataset或data()来访问它们

见下面的代码段

＆＃13;

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

＆＃13;

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

＆＃13;

<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>

＆＃13;

Answer 2

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

根据可用类获取Span的索引

2 个答案: