我试图在一个div中添加更多/更少的阅读，它也将有标题标签，但它没有反映
代码是:
$(function() {
var showTotalChar = 200, showChar = "Show (+)", hideChar = "Hide (-)";
$('.show').each(function() {
var content = $(this).text();
if (content.length > showTotalChar) {
var con = content.substr(0, showTotalChar);
var hcon = content.substr(showTotalChar, content.length - showTotalChar);
var txt= con + '<span class="dots">...</span><span class="morectnt"><span>' + hcon + '</span> <a href="" class="showmoretxt">' + showChar + '</a></span>';
$(this).html(txt);
}
});
$(".showmoretxt").click(function() {
if ($(this).hasClass("sample")) {
$(this).removeClass("sample");
$(this).text(showChar);
} else {
$(this).addClass("sample");
$(this).text(hideChar);
}
$(this).parent().prev().toggle();
$(this).prev().toggle();
return false;
});
});.morectnt span {
display: none;
}<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap 4 Website Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<style>
.morectnt span {
display: none;
}
</style>
<script>
$(function() {
var showTotalChar = 200, showChar = "Show (+)", hideChar = "Hide (-)";
$('.show').each(function() {
var content = $(this).text();
if (content.length > showTotalChar) {
var con = content.substr(0, showTotalChar);
var hcon = content.substr(showTotalChar, content.length - showTotalChar);
var txt= con + '<span class="dots">...</span><span class="morectnt"><span>' + hcon + '</span> <a href="" class="showmoretxt">' + showChar + '</a></span>';
$(this).html(txt);
}
});
$(".showmoretxt").click(function() {
if ($(this).hasClass("sample")) {
$(this).removeClass("sample");
$(this).text(showChar);
} else {
$(this).addClass("sample");
$(this).text(hideChar);
}
$(this).parent().prev().toggle();
$(this).prev().toggle();
return false;
});
});
</script>
</head>
<body>
<div class="container bg-light py-5">
<div class="row">
<div class="col">
<div class="show">
<h1>lorem ipsum doler sit amet</h1>
<h2>subtitle</h2>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec magna tellus, vulputate in feugiat vel, auctor at ipsum. Curabitur imperdiet orci eget congue malesuada. Vestibulum gravida mi sed facilisis elementum. Phasellus sed eros nulla. Proin porta aliquam tristique.
Suspendisse tincidunt augue eget nulla luctus porta. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec magna tellus, vulputate in feugiat vel, auctor at ipsum. Curabitur imperdiet orci eget congue malesuada. Vestibulum gravida mi sed facilisis elementum. Phasellus sed eros nulla. Proin porta aliquam tristique. Suspendisse tincidunt augue eget nulla luctus porta.</div>
</div>
</div>
</div>
</body>
</html>它不接受h1, h2标签，所有的内容都作为一个段落出现在一行中。
当您获得div的文本时，它会忽略它所在的标记。我将。text()替换为。html()这是固定的
$(function() {
var showTotalChar = 200,
showChar = "Show (+)",
hideChar = "Hide (-)";
$('.show').each(function() {
var content = $(this).html();
if (content.length > showTotalChar) {
var con = content.substr(0, showTotalChar);
var hcon = content.substr(showTotalChar, content.length - showTotalChar);
var txt = con + '<span class="dots">...</span><span class="morectnt"><span>' + hcon + '</span> <a href="" class="showmoretxt">' + showChar + '</a></span>';
$(this).html(txt);
}
});
$(".showmoretxt").click(function() {
if ($(this).hasClass("sample")) {
$(this).removeClass("sample");
$(this).text(showChar);
} else {
$(this).addClass("sample");
$(this).text(hideChar);
}
$(this).parent().prev().toggle();
$(this).prev().toggle();
return false;
});
});.morectnt span {
display: none;
}<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap 4 Website Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<style>
.morectnt span {
display: none;
}
</style>
<script>
$(function() {
var showTotalChar = 200,
showChar = "Show (+)",
hideChar = "Hide (-)";
$('.show').each(function() {
var content = $(this);
if (content.length > showTotalChar) {
var con = content.substr(0, showTotalChar);
var hcon = content.substr(showTotalChar, content.length);
var txt = con + '<span class="dots">...</span><span class="morectnt"><span>' + hcon + '</span> <a href="" class="showmoretxt">' + showChar + '</a></span>';
$(this).html(txt);
}
});
$(".showmoretxt").click(function() {
if ($(this).hasClass("sample")) {
$(this).removeClass("sample");
$(this).text(showChar);
} else {
$(this).addClass("sample");
$(this).text(hideChar);
}
$(this).parent().prev().toggle();
$(this).prev().toggle();
return false;
});
});
</script>
</head>
<body>
<div class="container bg-light py-5">
<!--<div class="row">
<div class="col">-->
<div class="show">
<h1>lorem ipsum doler sit amet</h1>
<br/>
<h2>subtitle</h2>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec magna tellus, vulputate in feugiat vel, auctor at ipsum. Curabitur imperdiet orci eget congue malesuada. Vestibulum gravida mi sed facilisis elementum. Phasellus sed eros nulla. Proin porta
aliquam tristique. Suspendisse tincidunt augue eget nulla luctus porta. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec magna tellus, vulputate in feugiat vel, auctor at ipsum. Curabitur imperdiet orci eget congue malesuada. Vestibulum
gravida mi sed facilisis elementum. Phasellus sed eros nulla. Proin porta aliquam tristique. Suspendisse tincidunt augue eget nulla luctus porta.
</div>
</div>
</body>
</html>