发布于 2016-12-23 03:28:32 | 149 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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js 弹出框 替代浏览器的弹出框,需要的朋友可以参考下。

 
function fromID(id) { 
return document.getElementById(id); 
} 

function show_alert(msg, type, time) { 
var layer_obj = fromID("alert_layer"); 
var layer_text= fromID("alert_text"); 
var line_height = (document.documentElement.scrollTop == 0) ? document.body.scrollTop : document.documentElement.scrollTop; 

layer_text.innerHTML = msg; 
with(layer_obj.style) { 
zIndex = 999; 
top = line_height-40; 
left = document.body.clientWidth/3; 
display = "block"; 
position = "absolute"; 
if(type == "error") { 
background = "url(http://"+style_domain+"/snake/index/msgbox_right_bg2.jpg)"; 
} 
} 

layer_obj.filters[0].opacity = "0.8"; //透明度为 80% 

if(time == undefined) time = 3000; 
else time = time*1000; 

var top = line_height-40; 
var speed = 1.5; 
time-= 1000; 
//控制窗口向下移动至页面边缘 
move_down = function MoveFplogo() { 
top+= speed; 
layer_obj.style.top = top; 
if(top < line_height) setTimeout("move_down()", 1); 
else setTimeout("close_alert_win()", time); 
} 

move_down(); 
} 

function close_alert_win() { 
var layer_obj = fromID("alert_layer"); 
//控制窗口渐渐消失 
if(layer_obj.filters[0].opacity < 0.02) { 
layer_obj.style.display = "none"; 
return true; 
} 
layer_obj.filters[0].opacity-= 0.02; 
setTimeout("close_alert_win()", 1); 
} 
document.writeln(" filter:progid:DXImageTransform.Microsoft.BasicImage();">"); 
document.writeln(" "); 
document.writeln(" "); 
document.writeln("");