我尝试在按钮点击事件中获取相同div的文本。 这是我的HTML标记：
<div class="flights">
<div class="flight-box">
<div class="row">
<div class="col-sm-3">
<div class="flight-info">
<div class="left-i">
<img src="img/sp_trans.gif" class="airlogowidth airsprite airlogo A4">
<div class="flight-no">SG-264</div>
</div>
<div class="right-i">
<div class="name">Air India</div>
</div>
</div>
</div>
<div class="col-sm-5">
<div class="flight-duration">
<div class="row">
<div class="col-sm-4">
<div class="events">
<span class="text">Depart</span>
<span class="time">12:30 PM</span>
<span class="route">IXA <i class="fa fa-arrow-right"></i> CCU</span>
</div>
</div>
<div class="col-sm-4">
<div class="events">
<span class="text">Arrive</span>
<span class="time">03:10 PM</span>
<span class="route">IXA <i class="fa fa-arrow-right"></i> CCU</span>
</div>
</div>
<div class="col-sm-4">
<div class="events">
<span class="text">Duration</span>
<span class="time">1h 40m </span>
<span class="route">No Stop</span>
</div>
</div>
</div>
</div>
</div>
<div class="col-sm-4">
<div class="fare-price">
<div class="row">
<div class="col-sm-6">
<span class="f-price">3999</span>
</div>
<div class="col-sm-6">
<div class="book-action">
<div class="btn-group-vertical" role="group">
<button type="button" class="btn btn-danger btn-book" name="booknow">Book Now</button>
<button type="button" class="btn text-primary btn-more-1" name="details">View More...</button>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="flight-footer">
<div class="row">
<div class="col-sm-3">
<div class="refund-status">
<span>Refundable</span>
</div>
</div>
<div class="col-sm-3">
<div class="fare-role">
<a href="#">Fare rules</a>
</div>
</div>
<div class="col-sm-3">
<div class="baggage-info">
<a href="#">Baggage Information</a>
</div>
</div>
<div class="col-sm-3">
<div class="itinerary-info">
<a href="#">Flight itinerary</a>
</div>
</div>
</div>
</div>
<div class="flight-itinerarySummary" style="display: none;">
<div class="row">
<div class="col-sm-12">
<h2>Agartala → Bangalore <small>22 Nov 2015</small></h2>
<ul class="itinerarySummary">
<li class="vendor">
<div class="airLogo fLeft">
<img src="img/airlines/AI.png" height="23" width="27">
</div>
<div class="airlineName">
<span class="name">Air India</span>
<small class="flightNumber">AI-744</small>
<small class="travelClass">Economy</small>
<small class="truncate" title=""></small>
</div>
</li>
<li class="start">
<time>
<span class="placeTime">
<span rel="tTooltip" original-title="Singerbhil, Agartala">IXA</span>
<strong> 11:20 </strong>
</span>
<span class="travelDate">22 Nov 2015</span>
</time>
<small class="terminal">
Singerbhil, Agartala
</small>
</li>
<li class="details">
<i class="clk itineraryClock"></i><abbr class="duration weak">50m</abbr>
</li>
<li class="end">
<time>
<span class="placeTime">
<strong> 12:10 </strong>
<span rel="tTooltip" original-title="Netaji Subhas Chandra Bose Airport, Kolkata">CCU</span>
</span>
<span class="travelDate"> 22 Nov 2015 </span>
</time>
<small class="terminal">
Netaji Subhas Chandra Bose Airport, Kolkata, Terminal 2
</small>
</li>
</ul>
<div class="connector weak">
<small class="layOver">Layover : 5h 20m</small>
</div>
<ul class="itinerarySummary">
<li class="vendor">
<div class="airLogo fLeft">
<img src="img/airlines/AI.png" height="23" width="27">
</div>
<div class="airlineName">
<span class="name">Air India</span>
<small class="flightNumber">AI-744</small>
<small class="travelClass">Economy</small>
<small class="truncate" title=""></small>
</div>
</li>
<li class="start">
<time>
<span class="placeTime">
<span rel="tTooltip" original-title="Singerbhil, Agartala">IXA</span>
<strong> 11:20 </strong>
</span>
<span class="travelDate">22 Nov 2015</span>
</time>
<small class="terminal">
Singerbhil, Agartala
</small>
</li>
<li class="details">
<i class="clk itineraryClock"></i><abbr class="duration weak">50m</abbr>
</li>
<li class="end">
<time>
<span class="placeTime">
<strong> 12:10 </strong>
<span rel="tTooltip" original-title="Netaji Subhas Chandra Bose Airport, Kolkata">CCU</span>
</span>
<span class="travelDate"> 22 Nov 2015 </span>
</time>
<small class="terminal">
Netaji Subhas Chandra Bose Airport, Kolkata, Terminal 2
</small>
</li>
</ul>
</div>
</div>
</div>
</div>
我想＆＃34; flight-no＆＃34; div html，SG-264 on＆＃39; btn-book＆＃39;点击。
我尝试如下，但返回＆＃39; undefine＆＃39; -
$('.btn-book').on('click', function(){
var flightNo = $(this).closest('div.flight-info').parent('div.left-i').html();
alert(flightNo);
});
请注意，页面中有许多行包含＆＃39;航班＆＃39;类。 有人帮我吗？
答案 0 :(得分：2)
您当前代码的问题是.flight-info元素不是.btn-book的直接父级，它是其中一个父级的兄弟。这就是.flight-info上的closest()选择器不返回任何内容的原因。
实现所需要的最简单方法是使用closest()获取两个元素的最近公共父级，在本例中为.flight-box，然后使用find()和{{1}获取航班号。试试这个：
text()答案 1 :(得分：0)
您需要将 .find（）与 .closest（）一起使用， div.left-i 是 div的子项.flight-info 不是 parent（）
像这样使用
$('.btn-book').on('click', function(){
var flightNo = $(this).closest('.flight-box').find('div.left-i .flight-no').html();
alert(flightNo);
});