利用js实现遮罩以及弹出可移动登录窗口
发布于 2017-06-27 20:58:59 | 89 次阅读 | 评论: 0 | 来源: 网友投递
这里有新鲜出炉的Javascript教程，程序狗速度看过来！
JavaScript客户端脚本语言
Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言，主要目的是为了解决服务器端语言，比如Perl，遗留的速度问题，为客户提供更流畅的浏览效果。
本篇文章是对使用js实现遮罩以及弹出可移动登录窗口的实现方法进行了详细的分析介绍，需要的朋友参考下
<!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>
<title></title>
<script type="text/javascript">
function showLogin() {
var loginDiv = document.getElementById("loginDiv");
var zhezhao = document.getElementById("zhezhao");
var clientx = document.documentElement.clientWidth;
var clienty = document.documentElement.clientHeight;
var l_margin = (clientx - parseInt(loginDiv.style.width)) / 2;
var t_margin = (clienty - parseInt(loginDiv.style.height)-200) / 2
loginDiv.style.left = l_margin + "px";
loginDiv.style.top = t_margin +"px";
loginDiv.style.display = "block";
zhezhao.style.display = "block";
}
function hidLogin() {
var loginDiv = document.getElementById("loginDiv");
var zhezhao = document.getElementById("zhezhao");
loginDiv.style.display = "none";
zhezhao.style.display = "none";
}
function titleMove() {
var moveable = true;
var loginDiv = document.getElementById("loginDiv");
//以下变量提前设置好 var clientX = window.event.clientX;
var clientY = window.event.clientY;
var moveTop = parseInt(loginDiv.style.top);
var moveLeft = parseInt(loginDiv.style.left);
document.onmousemove = function MouseMove() {
if (moveable) {
var y = moveTop + window.event.clientY - clientY;
var x = moveLeft + window.event.clientX - clientX;
if (x > 0 && y > 0) {
loginDiv.style.top = y + "px";
loginDiv.style.left = x + "px";
}
}
}
document.onmouseup = function Mouseup() {
moveable = false;
}
}
</script>
</head>
<body>
<!--Main start z-index:0-->
<div id="Main" style="position:absolute;z-index:0;">
<a href="javascript:showLogin()">登陆</a>
</div>
<!--Main start z-index:0-->
<!--loginDiv start :z-index:2-->
<div id="loginDiv" style="background-color:white;width:300px;height:150px;border:1px solid blue;z-index:2;display:none;position:absolute;border-top:none">
<div onmousedown="titleMove()" id="login_title" style="width:300px;height:25px;background-color:Blue;border:1px solid silver;border-left:none;border-right:none">
<!--<img src="../images/close.jpg" style="float:right" onclick="hidLogin()"/>-->
<a href="javascript:hidLogin()" style="float:right;text-decoration:none;color:white;margin-right:2px;font-size:20px">×</a>
</div>
<table style="clear:right;width:298px;height:115px;text-align:right;margin-top:10px;">
<tr><td>用户名：</td><td><input type="text" style="width:180px;" /></td><td> </td></tr>
<tr><td>密码:</td><td><input type="text" style="width:180px;" /></td><td> </td></tr>
<tr><td><br /></td><td></td></tr>
</table>
</div>
<!--loginDiv end :z-index:2-->
<!--zhezhao start: z-index:1-->
<div id="zhezhao" style="position:absolute;z-index:1;width:100%;height:100%;background-color:silver;display:none;opacity:.5;">
<!--zhezhao end-->
</div>
</body>
</html>
【效果】
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