巧用JS设置cookie、读取cookie、删除cookie

1、//写cookiesfunction setCookie(name,value,time){ var strtimes = gettimes(time); var exp = new Date(); exp.setTime(exp.getTime() + strtimes*1); document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();}function gettimes(str){ var str1=str.substring(1,str.length)*1; var str2=str.substring(0,1); if (str2=="s") { return str1*1000; } else if (str2=="h") { return str1*60*60*1000; } else if (str2=="d") { return str1*24*60*60*1000; }}

2、//读取cookiesfunction getCookie(name){ var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)"); if(arr=document.cookie.match(reg)) return unescape(arr[2]); else return null;}

3、//删除cookiesfunction delCookie(name){ var exp = new Dat髫潋啜缅e(); exp.setTime(exp.getTime() - 1); var cval=getCookie(name); if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();}

4、//使用示例setCookie("name","hayden");alert(getCookie("name"));