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>