实现
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery 文字超出高度后折叠</title>
<style>
.container{
margin: 0 auto;
width: 500px;
border: green 1px solid;
}
.content{
position: relative;
overflow: hidden;
padding: 15px;
}
.more{
text-align: right;
padding: 15px;
}
</style>
</head>
<body>
<div class="container">
<div class="content">
我以为要是唱的用心良苦，你就会对我义无反顾，我真的不会对你再爱一次，请你别再为我留太多的泪。也许这是真的不应该说，下一次我会给你更好的告别。
</div>
<div class="more"></div>
</div>
</body>
<script src="https://cdn.bootcdn.net/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script>
$(function(){
let zxHeight = 30;//最小高度
let mrHeight = $('.content').height();//默认高度
if (mrHeight >= mrHeight){
$('.content').css('height',zxHeight + 'px');
$('.more').append('<a href="#">展开</a>');
$('.more a').click(function(){
let dqHeight = $('.content').height();//当前高度
if (dqHeight > zxHeight){
$('.content').animate({height:zxHeight},'normal');
$('.more a').text('展开');
} else {
$('.content').animate({height:mrHeight},'normal');
$('.more a').text('折叠');
}
return false;
});
}
});
</script>
</html>
效果
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