我需要一些帮助。我必须编写一个 javascript 代码来切换 a 元素以显示或多或少。如果我点击显示更多，它应该显示更多，并带有一个显示更少的链接。
我遇到的问题
1. 如果我点击显示更多关于作者，它不仅会显示更多关于作者的信息，还会显示有关图书描述以及这本书是谁的更多信息为..我不希望它这样做，我只是希望它向我显示有关该特定信息的更多信息。
2. 它也没有向我显示或给我less 链接选项。
这是我的 HTML 和 JavaScript 代码。
$(document).ready(function() {
$("#jdom").click(function() {
$("a").toggle(function () {
$(this).text("").siblings("div").hide();
}, function() {
$(this).text("Less").siblings("div").show();
});
});
});article, aside, figure, figcaption, footer, header, nav, section {
display: block;
}
* {
margin: 0;
padding: 0;
}
body {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 87.5%;
width: 650px;
margin: 0 auto;
border: 3px solid blue;
}
section {
padding: 15px 25px;
}
h1 {
font-size: 150%;
}
h2 {
font-size: 120%;
padding: .25em 0 .25em 25px;
}
div.hide {
display: none;
}
ul {
padding-left: 45px;
}
li {
padding-bottom: .4em;
}
p, a {
padding-bottom: .4em;
padding-left: 25px;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Expand/Collapse</title>
<link rel="shortcut icon" href="images/favicon.ico">
<link rel="stylesheet" href="index.css">
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="subset_expansion.js"></script>
</head>
<body>
<section id="jdom">
<h1>Murach's JavaScript and DOM Scripting</h1>
<h2>Book description</h2>
<div>
<p>You can read other JavaScript books from start to finish and still not
know how to develop dynamic websites like you want to.</p>
</div>
<div class="hide">
<p>But now, you can go from JavaScript beginner to DOM scripting expert in a
single book! Fast-paced, professional, and packed with expert practices, our
new JavaScript book.</p>
</div>
<a href="#">Show more</a>
<h2>About the author</h2>
<div>
<p>Ray Harris is an expert JavaScript programmer. That will be obvious to you
as soon as you review the 20 complete applications that he presents in this
book.</p>
</div>
<div class="hide">
<p>Ray Harris is much more than a JavaScript programmer.</p>
<p>So when Ray said he wanted to write for us, it didn't take us long to hire
him.</p>
</div>
<a href="#">Show more</a>
<h2>Who this book is for</h2>
<div>
<p>Due to our unique presentation methods and this book's modular organization,
this is the right book for any web developer who wants to use JavaScript effectively.</p>
</div>
<div class="hide">
<p>Here's just a partial list of who can use this book:</p>
<ul>
<li>Web developers who know HTML and CSS and are ready to master JavaScript.</li>
<li>Web developers who program in ASP.NET, JSP, or PHP on the server side and
now want to master client-side coding.</li>
<li>Web developers who have already read 3 or 4 JavaScript or DOM scripting books
but still don't know how to do the type of DOM scripting that's required in
real-world applications</li>
</ul>
</div>
<a href="#">Show more</a>
</section>
</body>
</html>我不知道我做错了什么。
最佳答案
试试这个，
$(document).ready(function() {
$(document).on('click','a',function(e){
$(this).text( ($(this).text() == "Show more") ? "Less":"Show more" ) ;
$(document).find($(this).attr('data-target')).toggle();
/*OR WITH ANIMATION*/
/*
if($(this).text() == "Show more"){
$(this).text("Less");
$(document).find($(this).attr('data-target')).slideDown(300);
}else{
$(this).text("Show more");
$(document).find($(this).attr('data-target')).slideUp(300);
}*/
});
/*MORE ACTION*//*
$(document).on('click','#jdom',function(e){
$(document).find('a').each(function(){
$(this).trigger('click');
})
});
*/
});
HTML 部分更新如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Expand/Collapse</title>
<link rel="shortcut icon" href="images/favicon.ico">
<link rel="stylesheet" href="index.css">
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script src="subset_expansion.js"></script>
</head>
<body>
<section id="jdom">
<h1>Murach's JavaScript and DOM Scripting</h1>
<h2>Book description</h2>
<div>
<p>You can read other JavaScript books from start to finish and still not
know how to develop dynamic websites like you want to.</p>
</div>
<div class="hide" id="bookDesc">
<p>But now, you can go from JavaScript beginner to DOM scripting expert in a
single book! Fast-paced, professional, and packed with expert practices, our
new JavaScript book.</p>
</div>
<a href="#" data-target="#bookDesc">Show more</a>
<h2>About the author</h2>
<div>
<p>Ray Harris is an expert JavaScript programmer. That will be obvious to you
as soon as you review the 20 complete applications that he presents in this
book.</p>
</div>
<div class="hide" id="author">
<p>Ray Harris is much more than a JavaScript programmer.</p>
<p>So when Ray said he wanted to write for us, it didn't take us long to hire
him.</p>
</div>
<a href="#" data-target="#author">Show more</a>
<h2>Who this book is for</h2>
<div>
<p>Due to our unique presentation methods and this book's modular organization,
this is the right book for any web developer who wants to use JavaScript effectively.</p>
</div>
<div class="hide" id="bookDet">
<p>Here's just a partial list of who can use this book:</p>
<ul>
<li>Web developers who know HTML and CSS and are ready to master JavaScript.</li>
<li>Web developers who program in ASP.NET, JSP, or PHP on the server side and
now want to master client-side coding.</li>
<li>Web developers who have already read 3 or 4 JavaScript or DOM scripting books
but still don't know how to do the type of DOM scripting that's required in
real-world applications</li>
</ul>
</div>
<a href="#" data-target="#bookDet">Show more</a>
</section>
</body>
</html>
关于javascript - Javascript : Using a Toggle to Show More or Less，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40648608/