发布于 2016-11-14 11:36:34 | 93 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。
废话不多说，直接奉上代码，知道干啥用的小伙伴直接带走吧。
util=function(){
return {
$:function(id){
return document.getElementById(id);
},
trim:function(str){
return str.replace(/(^\s+)|(\s+$)/g, "");
},
len:function(str){
return str.replace(/[^\x00-\xff]/g,'**').length;
},
format:function(str){
var arg = arguments;
return str.replace(/\{(\d+)\}/g, function(m, i){
return arg[parseInt(i)+1];
});
},
each:function(object, callback, args){
var name, i = 0, length = object.length;
if ( args ) {
if ( length === undefined ) {
for ( name in object )
if ( callback.apply( object[ name ], args ) === false )
break;
} else
for ( ; i < length; )
if ( callback.apply( object[ i++ ], args ) === false )
break;
} else {
if ( length === undefined ) {
for ( name in object )
if ( callback.call( object[ name ], name, object[ name ] ) === false )
break;
} else
for ( var value = object[0];
i < length && callback.call( value, i, value ) !== false; value = object[++i] ){}
}
},
setCookie:function(name,value,hours,path,domain){
var str=new String();
var nextTime=new Date();
nextTime.setHours(nextTime.getHours()+hours);
str=name+"="+escape(value);
if(hours)
str+=";expires="+nextTime.toGMTString();
if(path)
str+=";path="+path;
if(domain)
str+=";domain="+domain;
document.cookie=str;
},
getCookie:function(name){
var rs=new RegExp("(^|)"+name+"=([^;]*)(;|$)","gi").exec(document.cookie),tmp;
if(tmp=rs)
return unescape(tmp[2]);
return null;
},
delCookie:function(name){
document.cookie = name + "=-1" + "; expires=Fri, 31 Dec 1999 23:59:59 GMT;";
},
/**
*url String
*parms String
*method String default value "get"
*asy Boolean defalut value true
*success Function(http_request.responseText)
**/
ajax:function(config){
var url=config.url,
parms=(config.parms?config.parms:"") + "&t="+new Date().getTime(),
method=config.method||"get",
asy=true;
var http_request=null;
if(method.toLowerCase()=="get"){
url=url+"?"+parms;
parms=null;
}
//开始初始化XMLHttpRequest对象
if(window.XMLHttpRequest) { //Mozilla 浏览器
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {//设置MiME类别
http_request.overrideMimeType("text/xml");
}
} else if (window.ActiveXObject) { // IE浏览器
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if(!http_request) { // 异常，创建对象实例失败
throw new Error("不能创建XMLHttpRequest对象实例.");
return null;
}
http_request.open(method,url,asy);
http_request.onreadystatechange=function(){
if (http_request.readyState == 4){
try{
if (http_request.status == 200){
config.success(http_request.responseText);
}
}catch(e){
throw new Error("数据读取失败.");
}
}
};
if(method.toLowerCase()=="post"){
http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
}
http_request.send(parms);
}
};
}();
是不是相当不错呢，反正我是很满意。