目录
弹窗自下而上，自上而下（slideDown(),slideUp()）,可设置回调函数。slideToggle（）能实现slideDown(),slideUp()这两种功能
弹窗渐隐渐现（fadeIn(),fadeOut()），可设置回调。fadeToggle（）能实现fadeIn(),fadeOut()这两种功能
弹窗自下而上，自上而下（slideDown(),slideUp()）,可设置回调函数。slideToggle（）能实现slideDown(),slideUp()这两种功能
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jQuery实现广告弹窗</title>
<script type="text/javascript" src="js/jquery-3.3.1.js" ></script>
<style type="text/css">
#ad{
width: 300px;
height: 300px;
background-color: yellowgreen;
bottom: 0;
right: 0;
position: fixed;
display: none;
}
</style>
<script type="text/javascript">
setTimeout(function(){
$("#ad").slideDown(2000);
},1000)
$(function(){
$("#closeBtn").click(function(){
$("#ad").slideUp("fast");
})
})
</script>
</head>
<body>
<div id="ad">
<button id="closeBtn">关闭</button>
</div>
</body>
</html>
弹窗渐隐渐现（fadeIn(),fadeOut()），可设置回调。fadeToggle（）能实现fadeIn(),fadeOut()这两种功能
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jQuery实现广告弹窗</title>
<script type="text/javascript" src="js/jquery-3.3.1.js" ></script>
<style type="text/css">
#ad{
width: 300px;
height: 300px;
background-color: yellowgreen;
bottom: 0;
right: 0;
position: fixed;
display: none;
}
</style>
<script type="text/javascript">
setTimeout(function(){
$("#ad").fadeIn(2000);
},1000)
$(function(){
$("#closeBtn").click(function(){
$("#ad").fadeOut("slow");
})
})
</script>
</head>
<body>
<div id="ad">
<button id="closeBtn">关闭</button>
</div>
</body>
</html>
fadeTo(时间，透明度)：可指定透明度
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jQuery实现广告弹窗</title>
<script type="text/javascript" src="js/jquery-3.3.1.js" ></script>
<style type="text/css">
#ad{
width: 300px;
height: 300px;
background-color: yellowgreen;
bottom: 0;
right: 0;
position: fixed;
display: none;
}
</style>
<script type="text/javascript">
setTimeout(function(){
$("#ad").fadeTo (1000,0.5);//0 完全透明；1 完全不透明
},1000)
$(function(){
$("#closeBtn").click(function(){
$("#ad").fadeToggle("slow");
})
})
</script>
</head>
<body>
<div id="ad">
<button id="closeBtn">关闭</button>
</div>
</body>
</html>
