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来源：互联网发布：新媒体沟通软件编辑：程序博客网时间：2024/05/01 02:25

<!DOCTYPE html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>js文本段落展开和收拢效果</title>
<style>html,body,div,h2,p{margin: 0;padding: 0;}
html{font: 1em Arial, Helvetica, sans-serif;color: #444;}
a{color: #0087f1;}
p{margin-bottom: 5px;}
#container{margin: 0 auto;width: 600px;}
#container h2{font-size: 20px;color: #0087f1;}
#wrap{position: relative;padding: 10px;overflow: hidden;}
#gradient{width: 100%;height: 35px;repeat-x;position: absolute;bottom: 0;left: 0;}
#read-more{padding: 5px;border-top: 4px double #ddd;background: #fff;color: #333;}
#read-more a{padding-right: 22px;no-repeat 100% 50%;font-weight: bold;text-decoration: none;}
#read-more a: hover{color: #000;}</style>
<script type="text/javascript" src="/ajaxjs/jquery-1.6.2.min.js"></script>
<script type="text/javascript">
$(function(){
var slideHeight = 70; // px
var defHeight = $('#wrap').height();
if(defHeight >= slideHeight){
$('#wrap').css('height' , slideHeight + 'px');
$('#read-more').append('<a href="#">点击查看更多。。</a>');
$('#read-more a').click(function(){
var curHeight = $('#wrap').height();
if(curHeight == slideHeight){
$('#wrap').animate({
height: defHeight
}, "normal");
$('#read-more a').html('不想看了');
$('#gradient').fadeOut();
}else{
$('#wrap').animate({
height: slideHeight

}, "normal");
$('#read-more a').html('点击查看更多。。');
$('#gradient').fadeIn();
}
return false;
});
}
});
</script>
</head>
<body>
<div id="container">

<div id="wrap" style=" overflow:hidden">

<div id="gradient"></div>
</div>
<div id="read-more"></div>
</div>
</body>
</html>

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