回到页面顶部链接

人气：　来源：本站原创　作者：佚名　所属栏目：窗口类　[切换到繁體中文]

介绍：随屏滚动效果，无论什么时候点击它都会回到页面顶部，可不是用"#"的那种效果。

演示：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html;charset=gb2312" />
<title>站长手册_特效演示_回到页面顶部链接</title>
<style><!--body,td{font-size: 12px;}--></style>

</head>
<body bgcolor="" >
<table width="100%" height="1000" border="0" cellpadding="10" cellspacing="5">
<tr>
<td valign="top">
<script language="JavaScript1.2">
var displayed="<nobr><b>[回到顶部]</b></nobr>"
var logolink='javascript:window.scrollTo(0,0)'
var ns4=document.layers
var ie4=document.all
var ns6=document.getElementById&&!document.all
function regenerate(){
window.location.reload()
}
function regenerate2(){
if (ns4)
setTimeout("window.onresize=regenerate",400)
}

if (ie4||ns6)
document.write('<span id="logo" style="position:absolute;top:-300;z-index:100">'+displayed+'</span>')

function createtext(){
staticimage=new Layer(5)
staticimage.left=-300
staticimage.document.write('<a href="'+logolink+'">'+displayed+'</a>')
staticimage.document.close()
staticimage.visibility="show"
regenerate2()
staticitns()
}

function staticit(){
var w2=ns6? pageXOffset+w : document.body.scrollLeft+w
var h2=ns6? pageYOffset+h : document.body.scrollTop+h
crosslogo.style.left=w2
crosslogo.style.top=h2
}

function staticit2(){
staticimage.left=pageXOffset+window.innerWidth-staticimage.document.width-28
staticimage.top=pageYOffset+window.innerHeight-staticimage.document.height-10
}

function inserttext(){
if (ie4)
crosslogo=document.all.logo
else if (ns6)
crosslogo=document.getElementById("logo")
crosslogo.innerHTML='<a href="'+logolink+'">'+displayed+'</a>'
w=ns6? Window.innerWidth-crosslogo.offsetWidth-20 : document.body.clientWidth-crosslogo.offsetWidth-10
h=ns6? Window.innerHeight-crosslogo.offsetHeight-15 : document.body.clientHeight-crosslogo.offsetHeight-10
crosslogo.style.left=w
crosslogo.style.top=h
if (ie4)
window.onscroll=staticit
else if (ns6)
startstatic=setInterval("staticit()",100)
}

if (ie4||ns6){
window.onload=inserttext
window.onresize=new Function("window.location.reload()")
}
else if (ns4)
window.onload=createtext

function staticitns(){
startstatic=setInterval("staticit2()",90)
}
</script>
</td>
</tr>
</table>
</body>
</html>

[Ctrl+A全选提示：你可先修改部分代码，再按运行]

下面教你如何应用此特效：
　--------------------------------------------------------------------------------------
　　需要在<body 这里>加入的代码：
　--------------------------------------------------------------------------------------

以下代码加到<head>…</head>中

以下代码加到<body>…</body>中

if (ie4||ns6)
document.write('<span id="logo" style="position:absolute;top:-300;z-index:100">'+displayed+'</span>')

function createtext(){
staticimage=new Layer(5)
staticimage.left=-300
staticimage.document.write('<a href="'+logolink+'">'+displayed+'</a>')
staticimage.document.close()
staticimage.visibility="show"
regenerate2()
staticitns()
}

function staticit(){
var w2=ns6? pageXOffset+w : document.body.scrollLeft+w
var h2=ns6? pageYOffset+h : document.body.scrollTop+h
crosslogo.style.left=w2
crosslogo.style.top=h2
}

function staticit2(){
staticimage.left=pageXOffset+window.innerWidth-staticimage.document.width-28
staticimage.top=pageYOffset+window.innerHeight-staticimage.document.height-10
}

function inserttext(){
if (ie4)
crosslogo=document.all.logo
else if (ns6)
crosslogo=document.getElementById("logo")
crosslogo.innerHTML='<a href="'+logolink+'">'+displayed+'</a>'
w=ns6? Window.innerWidth-crosslogo.offsetWidth-20 : document.body.clientWidth-crosslogo.offsetWidth-10
h=ns6? Window.innerHeight-crosslogo.offsetHeight-15 : document.body.clientHeight-crosslogo.offsetHeight-10
crosslogo.style.left=w
crosslogo.style.top=h
if (ie4)
window.onscroll=staticit
else if (ns6)
startstatic=setInterval("staticit()",100)
}

if (ie4||ns6){
window.onload=inserttext
window.onresize=new Function("window.location.reload()")
}
else if (ns4)
window.onload=createtext

function staticitns(){
startstatic=setInterval("staticit2()",90)
}
</script>