封装cookie

function setCookie(key,value,time){
    var date=new Date();
    date.setDate(date.getDate()+time);
    document.cookie=key+'='+value+';expires='+date;
}

function getCookie(key){
    var cookie=document.cookie;
    var arry=cookie.split('; ');
    for (const item of arry) {
        var newArry=item.split('=');
        if(newArry[0]==key){
            return newArry[1];
        }
    }
}

function removeCookie(key) {
    this.setCookie(key,'',-1)

}