[英]Unable to get HTML DOM element using jQuery
I am trying to get the text of one of the elements and show it up on an alert but its not working for me. 我正在尝试获取其中一个元素的文本,并在警报中显示它,但对我不起作用。 The element in question is
<h5 class="title">
. 有问题的元素是
<h5 class="title">
。 Here is my html code: 这是我的html代码:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.css">
<link rel="stylesheet" href="styling.css">
<script src="http://code.jquery.com/jquery-1.10.2.min.js"></script>
<script src="http://code.jquery.com/mobile/1.4.2/jquery.mobile-1.4.2.min.js"></script>
<title>Example</title>
</head>
<body>
<div data-iconpos="none" data-role="collapsibleset" data-theme="a" data-content-theme="a">
<div data-role="collapsible" data-collapsed="false">
<h2><img src="today_calendar.png" style="height: 60px; vertical-align:middle;"> Today's Events</h2>
<div id="todayCollapsible">
<div id="event1" data-role="collapsible" data-collapsed="true">
<h5 class="title">Event Title One</h5>
<ul data-role="listview" id="today_events">
<li class="event"><a href="#">
<table><tr><td>Date</td>
<td class="date" style="padding: 10px;">01/01/2014</td>
</tr><tr>
<td> Time </td>
<td class="time" style="padding: 10px;">1 hour</td>
</tr><tr>
<td> Venue </td>
<td class="venue" style="padding: 10px;">One Plaza</td>
</tr></table></a></li>
<li style="background-color: #CADECC;">
<button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-calendar" style="width: 170px; float: right; position: relative;">Add to calendar</button>
</li></ul>
</div>
<div id="event2" data-role="collapsible" data-collapsed="true">
<h5 class="title">Event Title Two</h5>
<ul data-role="listview" id="today_events">
<li class="event"><a href="#">
<table><tr><td>Date</td>
<td class="date" style="padding: 10px;">02/02/2014</td>
</tr><tr>
<td> Time </td>
<td class="time" style="padding: 10px;">2 hours</td>
</tr><tr>
<td> Venue </td>
<td class="venue" style="padding: 10px;">Two Plaza</td>
</tr></table></a></li>
<li style="background-color: #CADECC;">
<button class="ui-btn ui-shadow ui-corner-all ui-btn-icon-left ui-icon-calendar" style="width: 170px; float: right; position: relative;">Add to calendar</button>
</li></ul>
</div>
</div>
</div>
<script>
(function() {
"use strict";
$("body").on('click','button',function(){
var title = $(this).closest("div").find(".title").text();
var date = $(this).closest("div").find("table .date").text();
//var time = $(this).parents().find(".time").text();
//var venue = $(this).parents().find(".venue").text();
alert(title+date);
});
})();
</script>
</body>
</html>
Your issue is that since you are using jQuery mobile, it is restructuring the DOM and wrapping an extra <dv>
around your <ul>
您的问题是,由于您使用的是jQuery mobile,因此它正在重组DOM,并在
<ul>
周围包裹了一个额外的<dv>
<ul>
Thus the closest('div')
is different than the one in your source. 因此,
closest('div')
与源代码中的那个不同。
Try This: 尝试这个:
Add data-title
to your h5 为您的h5添加
data-title
<h5 class="title" data-title="Event Title Two">Event Title Two</h5>
And change JS to: 并将JS更改为:
$("body").on('click','button',function(){
var title = $(this).closest("div").siblings('h5.title').data("title");
var date = $(this).closest("div").find("table .date").text();
//var time = $(this).parents().find(".time").text();
//var venue = $(this).parents().find(".venue").text();
alert(title+date);
});
Apparently, jQuery mobile will wrap some elements with a div, in this case, the <ul data-role="list-view">
. 显然,jQuery mobile将用div包装一些元素,在这种情况下,是
<ul data-role="list-view">
。 Therefore, running .closest('div')
will refer to the generated div, instead of the one that contains the h5
. 因此,运行
.closest('div')
将引用生成的div,而不是包含h5
div。
To fix this, add your own class to the div. 要解决此问题,请将您自己的类添加到div中。
<div id="event1" class="event-wrapper" data-role="collapsible" data-collapsed="true">
<!-- ^ Here -->
Then, use your class to refer to it. 然后,使用您的类来引用它。
jQuery mobile adds a further complication: it adds extra text that will be read by the .text()
function. jQuery mobile进一步增加了复杂性:它添加了额外的文本,这些文本将由
.text()
函数读取。 We need to store the text we need first before jQuery mobile adds text to the page. 在jQuery mobile将文本添加到页面之前,我们需要存储我们首先需要的文本。
$(document).one('pagebeforecreate', function(){
$('h5').each(function(){this.dataset.text = this.innerHTML;});
});
Then, we need to read the text we need from a data attribute instead of using .text()
. 然后,我们需要从数据属性读取所需的文本,而不是使用
.text()
。
var title = $(this).closest(".event-wrapper").find(".title").data('text');
var date = $(this).closest(".event-wrapper").find("table .date").text();
I've updated my answer. 我已经更新了答案。 your code works fine.
您的代码工作正常。 my bad.
我的错。 hehehe.
呵呵呵。
$("body").on('click','button',function(){
var title = $(this).closest("div").find(".title").text();
var date = $(this).closest("div").find("table .date").text();
//var time = $(this).parents().find(".time").text();
//var venue = $(this).parents().find(".venue").text();
alert(title+date);
}
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