分享帮助文档cookie.js

function setCookie(key,value,day){

    if(day == undefined){

        document.cookie = `${key}=${value}`;

    }else{

        let date = new Date();

        date.setDate(date.getDate()+day);

        document.cookie = `${key}=${value};expires=${date}`;

    }

}

function getCookie(key){

    let strCookie = document.cookie;

    let arrCookie = strCookie.split("; ");

    for(let i=0; i<arrCookie.length; i++){

        let item = arrCookie[i].split("=");

        if(item[0] == key){

            return item[1];

        }

    }

    return "";

}

function delCookie(key){

    setCookie(key,'',-1);

}