封装cookie 获取cookie 设置cookie

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好好学习 ，天天向上。Are you ready?

代码奉上

//设置cookie
function setCookie(name,val,expires){
	var d=new Date();
	d.setDate(d.getDate()+expires);
	document.cookie=name+"="+val+";path=/expires="+d.toGMTString();
}
//删除cookie
function removeCookie(name,val){
	setCookie(name,val,-1);
}

//获取指定cookie
function getCookie(name){
	var str=document.cookie;
	var arr=str.split(";");
	var len=arr.length;
	for(var i=0;i<len;i++){
		var newarr=arr[i].split("=");
		if(newarr[0]==name){
			return newarr[1]
		}
	}
}