cookie的设置与获取.js

// 标记判断是否第一次进入活动页
	var value = getCookie("jack");
    //判断value是否有值
	if(!value){
		setCookie('jack','123');    //设置cookie值
		zheZhao.style.display='inline-block';
		alertDiv.style.display='inline-block';
	}else{
		zheZhao.style.display='none';
		alertDiv.style.display='none';
		smallWindow.style.display='inline-block';
	}
	function closeWindow(){
		zheZhao.style.display='none';
		alertDiv.style.display='none';
		smallWindow.style.display='inline-block';
	}
	// cookie存储默认浏览器关闭清空
	function setCookie(name,value){
		document.cookie = name + "="+ escape (value);
        //设置cookie30天清空
        /*var Days = 30;
        var exp = new Date();
        exp.setTime(exp.getTime() + Days*24*60*60*1000);
        document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();*/
	}
	
	function getCookie(name){
		var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
		if(arr=document.cookie.match(reg))
		return unescape(arr[2]);
		else
		return null;
	}