改版了网上的一个js操作userdata

复制代码代码如下:<input type=text id=a><button onclick="Session.save('a',a.value);"><button onclick="alert(Session.load('a'))"> <body> <SCRIPT LANGUAGE="JavaScript">  </SCRIPT> 下面是其它网友文章:js 保存大量数据. IE系列存储到电脑上,直到删除文件. FF关闭则删除复制代码代码如下: <script> //userData类 var RuserData={ o:null, timeExpires:7, browser:'', //初始化userdata init:function() { if(this.browser != '') return true; if(window.ActiveXObject)//for IE { try{ this.o=document.createElement("input"); this.o.id="Ruserdata"; this.o.type="hidden"; this.o.style.behavior="url(#default#userData)"; this.browser='ie'; document.body.appendChild(this.o); return true; }catch(e){return false;} }else if(window.sessionStorage)//FF 2.0+*/ { try{ this.o=window.sessionStorage; this.browser='ff'; return true; }catch(e){return false;} } return false; }, setVal:function(key,val,timeout/*正定义超时时间,为空用默认值*/){ this.init(); if(this.browser == 'ie'){ try{ this.o.load(key); this.o.expires=typeof timeout == 'undefined' ? this.getTimeLimit(this.timeExpires) : this.getTimeLimit(timeout); this.o.setAttribute('value',val); this.o.save(key); return true; }catch(e){return false} }else if(this.browser == 'ff'){ try{this.o.setItem(key,val);return true;} catch(e){return false} } }, getVal:function(key){ this.init(); if(this.browser == 'ie'){ try{ this.o.load(key); return this.o.getAttribute('value'); }catch(e){return false;} }else if(this.browser == 'ff'){ try{return this.o.getItem(key);} catch(e){return false} } }, delVal:function(key){ this.init(); if(this.browser == 'ie'){ try{ this.o.load(key); this.o.expires=new Date(315532799000).toUTCString(); this.o.save(key); return true; } catch(e){return false;} }else if(this.browser == 'ff'){ try{this.o.removeItem(key);return true;} catch(e){return false} } }, getTimeLimit:function(days/*设置超时天数*/){ var d=new Date(); d.setDate(d.getDate() + days); return d.toUTCString(); } }; window.onload=function(){ //alert(RuserData.delVal('renchao')); //alert(RuserData.setVal('renchao','脚本之家www.jb51.net')); alert(RuserData.getVal('renchao')); } </script> 使用方法: 复制代码代码如下: window.onload=function(){ //alert(RuserData.delVal('renchao')); //alert(RuserData.setVal('renchao','脚本之家www.jb51.net')); alert(RuserData.getVal('renchao')); }

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