Selleck --- 01Cookie

1.

//1.设置Cookie
function setCookie(name,value,days) {
    var date = new Date();
    date.setDate(date.getDate() + days);
    document.cookie = name + "="+ value + ";expires="+ date;
}
console.log(setCookie("pwd","5566778899",1));

//获取cookie
function getCookie(name) {
    var cookies = document.cookie.split(";");
    for(var i = 0, len = cookies.length; i < len; i++){
        var map = cookies[i].split("=");
        if (name == map[0]){
            return map[1];
        }
    }
    return false;//first time
}
alert(getCookie("pwd"))

//删除cookie
function removeCookie(name){
    setCookie(name,1,-1);
}
removeCookie("pwd");
alert(document.cookie)