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var
SydAjax = { ajax:function(opt){ var
xhr = this.createXhrObject(); xhr.onreadystatechange = function(){ if(xhr.readyState!=4) return
; (xhr.status===200 ? opt.success(xhr.responseText,xhr.responseXML): opt.error(xhr.responseText,xhr.status)); } xhr.open(opt.type,opt.url,true); if(opt.type!==‘post‘) opt.data=null; else xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); opt.data = this.parseQuery(opt.data); xhr.send(opt.data); }, post:function(url,success,data){ var
popt = { url:url, type:‘post‘, data:data, success:success, error:function(data){} } this.ajax(popt); }, get:function(url,success){ var
gopt = { url:url, type:‘get‘, success:success, error:function(){} } this.ajax(gopt); }, createXhrObject:function(){ var
methods = [ function(){ return
new XMLHttpRequest();}, function(){ return
new ActiveXObject(‘Msxml2.XMLHTTP‘);}, function(){ return
new ActiveXObject(‘Microsoft.XMLHTTP‘);} ]; for(var
i=0;len=methods.length,i<len;i++){ try{ methods[i](); }catch(e){ continue; } this.createXhrObject = methods[i]; return
methods[i](); } throw
new Error(‘Could not create an XHR object.‘); }, parseQuery:function(json){ if(typeof
json == ‘object‘){ var
str = ‘‘; for(var
i in
json){ str += "&"+i+"="+encodeURIComponent(json[i]); } return
str.length==0 ? str : str.substring(1); }else{ return
json; } }}; |
原文：http://www.cnblogs.com/invincible-hehe/p/3737912.html