JavaScript实现自适应窗口大小的网页详解编程语言

<!DOCTYPE html> 
<html> 
<head> 
<meta http-equiv="content-type" content="text/html; charset=utf-8"> 
<meta http-equiv="imagetoolbar" content="no"> 
<meta name="viewport" content="width=device-width,inital-scale=1"/> 
<title>Login</title> 
<style type="text/css"> 
body{ 
text-align: left; 
background-color: F6F6F6; 
background-attachment: fixed; 
} 
#imgcenter{ 
position:relative; 
height: auto; 
width:50%; 
left:20%; 
top:250px; 
} 
#center{ 
position:relative; 
height: auto; 
width:50%; 
left:20%; 
top:220px; 
} 
#account{ 
position:relative; 
height: auto; 
left:60%; 
top:-110px; 
padding:2%; 
width:50%; 
} 
#pwd{ 
position:relative; 
height: auto; 
left:60%; 
top:-100px; 
padding:2%; 
width: 50%; 
} 
#login{ 
position:relative; 
height: auto; 
left:60%; 
top:-95px; 
padding:1%; 
width: 25%; 
} 
#logo{ 
padding:3%; 
width: 50%; 
height: auto; 
} 
#div_forgetpwd{ 
position:relative; 
height: 30%; 
left: 90%; 
top:-115px; 
width: 25%; 
font-size: 1pt;   
white-space:nowrap; 
} 
#div_forgetpwd a{ 
text-decoration: none; 
margin: auto; 
} 
#div_forgetpwd a:hover{ 
text-decoration: underline; 
margin: auto; 
} 
.Clew{ 
position:relative; 
height: 15px; 
left:-10%; 
top:-80%; 
padding:2% 50%; 
white-space:nowrap; 
color: #FFFFD5; 
font-weight: bold; 
font-family: century gothic, arial; 
background: #FCBE47; 
border-top: 2px solid #db6e3c; 
border-bottom: 2px solid #db6e3c; 
} 
</style> 
<script type="text/javascript" src="E:/MyProject/html/KServer/jquery-1.4.2.min.js"></script> 
<script type="text/javascript"> 
//error clew 
var userFlag=0; 
var pwdFlag=0; 
$().ready(function() { 
$("form :input").blur(function() { 
var $parent = $(this).parent(); 
$parent.find(".clew").remove(); 
if($(this).is(".username")) { 
if(this.value=="" || this.value.length < 0) { 
var errorMsg = "Please enter your account."; 
$parent.append("<span class='clew Clew'>"+errorMsg+""); 
}else 
userFlag=1; 
} 
if($(this).is(".password")) { 
if(this.value=="" || this.value.length < 0) { 
var errorMsg = "Please enter your password."; 
$parent.append("<span class='clew Clew'>"+errorMsg+""); 
}else 
pwdFlag=1; 
}       
}).keyup(function() { 
$(this).triggerHandler("blur"); 
}).focus(function() { 
$(this).triggerHandler("blur"); 
}); 
}); 
//提交检验 
function validate_form(thisform){ 
with (thisform){ 
if (userFlag==0||pwdFlag==0){ 
username.focus(); 
return false; 
} 
} 
} 
</script> 
</head> 
<body bgcolor="#F6F6F6" > 
<!-- 
<form  action="#" method="get" name="form" id="form"> 
当前窗口高度: 
<input type="text" name="availHeight" size="6"> 
<br> 
当前窗口宽度: 
<input type="text" name="availWidth" size="6"> 
<br> 
</form> 
--> 
<div id="imgcenter"> 
<img src="E:/MyProject/html/KServer/login/login.png" id="logo" align="left" ></div> 
<div id="center"> 
<form method="post" action="db.html" onsubmit="return validate_form(this);"> 
<input type=text name="username" value="请输入用户名.." id="account" 
class="username"> 
<br> 
<input type=password name="password" value=".." id="pwd" class="password"> 
<br> 
<input type=submit value="登录" id="login"> 
<div id="div_forgetpwd">                
<a href="E:/MyProject/html/KServer/register/register.html" >注册帐号</a> 
<a href="E:/MyProject/html/KServer/forget_pwd/forget_pwd.html" >忘记密码</a> 
</div> 
</form> 
</div> 
<script type="text/javascript"> 
//更改元素CSS属性 
function set(){ 
var setImgDiv = document.getElementById("imgcenter"); 
setImgDiv.style.top = "150px"; 
setImgDiv.style.left = "36%"; 
var setTextDiv = document.getElementById("center"); 
setTextDiv.style.top = "280px"; 
setTextDiv.style.left = "8%"; 
var setLogo=document.getElementById("logo"); 
setLogo.style.height="100px"; 
setLogo.style.width="240px"; 
var setAccount=document.getElementById("account"); 
setAccount.style.height="15px"; 
setAccount.style.width="240px"; 
var setPwd=document.getElementById("pwd"); 
setPwd.style.height="15px"; 
setPwd.style.width="240px"; 
var setLogin=document.getElementById("login"); 
setLogin.style.height="25px"; 
setLogin.style.width="100px"; 
var setForgetPwd=document.getElementById("div_forgetpwd"); 
setForgetPwd.style.width="100px"; 
setForgetPwd.style.left="100%"; 
} 
function reSet(){ 
var reSetImgDiv = document.getElementById("imgcenter"); 
reSetImgDiv.style.top = "250px"; 
reSetImgDiv.style.left = "20%"; 
var reSetTextDiv = document.getElementById("center"); 
reSetTextDiv.style.top = "220px"; 
reSetTextDiv.style.left = "20%"; 
var reSetLogo=document.getElementById("logo"); 
reSetLogo.style.height="auto"; 
reSetLogo.style.width="50%"; 
var reSetAccount=document.getElementById("account"); 
reSetAccount.style.height="auto"; 
reSetAccount.style.width="50%"; 
var reSetPwd=document.getElementById("pwd"); 
reSetPwd.style.height="auto"; 
reSetPwd.style.width="50%"; 
var reSetLogin=document.getElementById("login"); 
reSetLogin.style.height="auto"; 
reSetLogin.style.width="25%"; 
var reSetForgetPwd=document.getElementById("div_forgetpwd"); 
reSetForgetPwd.style.width="100px"; 
reSetForgetPwd.style.left="90%"; 
} 
function setSizeMid(){ 
var setSizeMidImgDiv = document.getElementById("imgcenter"); 
setSizeMidImgDiv.style.top = "150px"; 
setSizeMidImgDiv.style.left = "22%"; 
var setSizeMidTextDiv = document.getElementById("center"); 
setSizeMidTextDiv.style.top = "280px"; 
setSizeMidTextDiv.style.left = "-35px"; 
var setSizeMidLogo=document.getElementById("logo"); 
setSizeMidLogo.style.height="100px"; 
setSizeMidLogo.style.width="240px"; 
var setSizeMidAccount=document.getElementById("account"); 
setSizeMidAccount.style.height="15px"; 
setSizeMidAccount.style.width="240px"; 
var setSizeMidPwd=document.getElementById("pwd"); 
setSizeMidPwd.style.height="15px"; 
setSizeMidPwd.style.width="240px"; 
var setSizeMidLogin=document.getElementById("login"); 
setSizeMidLogin.style.height="25px"; 
setSizeMidLogin.style.width="80px"; 
var setSizeMidForgetPwd=document.getElementById("div_forgetpwd"); 
setSizeMidForgetPwd.style.width="80px"; 
setSizeMidForgetPwd.style.left="110%"; 
} 
function setSizeMini(){ 
var setSizeMiniImgDiv = document.getElementById("imgcenter"); 
setSizeMiniImgDiv.style.top = "150px"; 
setSizeMiniImgDiv.style.left = "6%"; 
var setSizeMiniTextDiv = document.getElementById("center"); 
setSizeMiniTextDiv.style.top = "280px"; 
setSizeMiniTextDiv.style.left = "-60px"; 
var setSizeMiniLogo=document.getElementById("logo"); 
setSizeMiniLogo.style.height="100px"; 
setSizeMiniLogo.style.width="240px"; 
var setSizeMiniAccount=document.getElementById("account"); 
setSizeMiniAccount.style.height="15px"; 
setSizeMiniAccount.style.width="240px"; 
var setSizeMiniPwd=document.getElementById("pwd"); 
setSizeMiniPwd.style.height="15px"; 
setSizeMiniPwd.style.width="240px"; 
var setSizeMiniLogin=document.getElementById("login"); 
setSizeMiniLogin.style.height="25px"; 
setSizeMiniLogin.style.width="80px"; 
var setSizeMiniForgetPwd=document.getElementById("div_forgetpwd"); 
setSizeMiniForgetPwd.style.width="80px"; 
setSizeMiniForgetPwd.style.left="125%"; 
} 
//获取当前窗口尺寸 
var winWidth = 0; 
var winHeight = 0; 
function findDimensions() //函数:获取尺寸 
{ 
//获取窗口宽度 
if (window.innerWidth) 
winWidth = window.innerWidth; 
else if ((document.body) && (document.body.clientWidth)) 
winWidth = document.body.clientWidth; 
//获取窗口高度 
if (window.innerHeight) 
winHeight = window.innerHeight; 
else if ((document.body) && (document.body.clientHeight)) 
winHeight = document.body.clientHeight; 
//通过深入Document内部对body进行检测,获取窗口大小 
if (document.documentElement  && document.documentElement.clientHeight && document.documentElement.clientWidth) 
{ 
winHeight = document.documentElement.clientHeight; 
winWidth = document.documentElement.clientWidth; 
} 
//结果输出至两个文本框 
if(winWidth<420||winHeight<537) 
setSizeMini(); 
else if(420<=winWidth&&winWidth<=595) 
setSizeMid(); 
else if(595<winWidth&&winWidth<850||537<winHeight&&winHeight<590) 
set(); 
else 
reSet(); 
}    
findDimensions(); 
//调用函数,获取数值 
window.onresize=findDimensions; 
</script> 
</body> 
</html>

原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/8713.html

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