基本语法
1.设置本地存储
// let now = new Date();
// now.setMinutes(now.getMinutes() + 1);
// document.cookie = “nickname=Jake;expires=” + now.toUTCString()
2.删除本地存储
// let now = new Date();
// now.setMinutes(now.getMinutes() + -1);
// document.cookie = “nickname=Jake;expires=” + now.toUTCString()
语法封装

var _={//设置本地存储
setCookie(key, val, expires) {if (typeof val === 'object')val = JSON.stringify(val);let now = new Date();now.setMinutes(now.getMinutes() + expires);document.cookie = `${key}=${val};expires=${now.toUTCString()}`
},
删除本地存储
removeCookie(key) {this.setCookie(key, null, -1)
},

获取本地存储的值
getCookie(key) {

    let obj = {};document.cookie.split('; ').forEach(r => {let kv = r.split('=');obj[kv[0]] = decodeURI([kv[1]]);});let res;if (key) {res = null;try {res = JSON.parse(obj[key])} catch (error) {res = obj[key];} finally {return res}}return obj
},}例子_.setCookie('age', { name: 20 }, 100)_.setCookie('nickname', '李哈皮', 100)_.setCookie('gender', '男', 100)console.log(_.getCookie('nickname'));