js 操作cookies 方法

js 操作cookies 方法var str="";
//JS操作cookies方法!
//Expires		设置Cookie的有效期限
//Domain		添加域名限制
//Path			添加路径限制
//写cookies
function setCookie(name,value){var Days=30;//过期时间30天var date=new Date(); date.setTime(date.getTime()+Days*24*60*60*1000);document.cookie=name+"="+escape(value)+";expires="+date.toGMTString();
}
//读取cookies的值
function getCookie(name){var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");if(arr=document.cookie.match(reg)){return unescape(arr[2]);}else{return null;}
}function delCookie(name) {var exp = new Date();exp.setTime(exp.getTime() - 1);var cval = getCookie(name);str += "||cval:" +cval;if (cval != null)document.cookie=name+"="+escape(cval)+";expires="+exp.toGMTString();}function w() {var name = document.getElementById("vkey").value;var value = document.getElementById("vvalue").value;setCookie(name, value);str += "||get:"+getCookie(name);write();str="";}function d() {var name = document.getElementById("vkey").value;delCookie(name);write();str="";}function g() {var name = document.getElementById("vkey").value;str += "||get:"+getCookie(name);write();str="";}function write(){document.getElementById("info").innerHTML= ("||cookes:"+document.cookie)+" ||||" +str;}
</script>