发布于 2016-12-17 09:46:35 | 105 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。

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多浏览器的弹出层效果核心代码。需要的朋友可以测试下这个是从正在使用的网站中扒下来的。

// JavaScript Document 
var dv; 
var dvMsg; 
function customalert() 
{ 

dvMsg = document.createElement("div"); 
dvMsg.style.position = "absolute"; 
dvMsg.setAttribute('id', 'msg'); 
dvMsg.style.width = "600px"; 
dvMsg.style.padding = "10 0 2 0"; 
dvMsg.style.height = "313px"; 
dvMsg.style.background = "#EF621D"; 
dvMsg.style.border = "1px solid #6699dd"; 
dvMsg.style.zIndex = "1112"; 
document.body.appendChild(dvMsg); 
document.getElementById("msg").style.top = document.documentElement.scrollTop + (document.documentElement.clientHeight - document.getElementById("msg").offsetHeight)/2 + "px"; 
document.getElementById("msg").style.left = document.documentElement.scrollLeft + (document.documentElement.clientWidth - document.getElementById("msg").offsetWidth)/2 + "px"; 
var imgs = document.createElement("div"); 
imgs.setAttribute("id", "pic"); 
imgs.title = "close"; 
imgs.style.float = "left"; 
imgs.style.height = "20px"; 
imgs.innerHTML = "<a href=\"http://www.phperz.com\" target=\"_blank\"><img src=\"../javascript/close.gif\"/></a>"; 
imgs.style.color = "#FFF"; 
imgs.style.textAlign = "right"; 
imgs.style.cursor = "pointer"; 
imgs.style.zIndex = "1114"; 
imgs.onclick = function() 
{ 
document.body.removeChild(dvMsg); 
document.body.removeChild(dv); 
} 

document.getElementById("msg").appendChild(imgs); 
var divstr = document.createElement("div"); 
divstr.setAttribute("id", "info"); 
divstr.style.left = "0"; 
divstr.style.position = "absolute"; 
divstr.style.marginTop = "10px"; 
divstr.style.zIndex = "1115"; 
divstr.innerHTML = "<embed src=\"gallery/header2.swf\" pluginspage=\"http://www.macromedia.com/shockwave/download /\" width=\"600\" height=\"313\"></embed>"; 
document.getElementById("msg").appendChild(divstr); 
} 

function scrolldivs() 
{ 
document.getElementById("msg").style.top=document.documentElement.scrollTop+(document.documentElement.clientHeight-document.getElementById("msg").offsetHeight)/2+"px"; 
document.getElementById("msg").style.left=document.documentElement.scrollLeft+(document.documentElement.clientWidth-document.getElementById("msg").offsetWidth)/2+"px"; 
} 

window.attachEvent("onresize",scrolldivs); 
window.onscroll=scrolldivs; 
window.onload=scrolldivs;