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<>实现功能：
1、登录时勾选记住密码，用cookie保存账号和密码并对密码进行两次加密处理（纯前端），下次登录自动输入账号密码
2、登录时不勾选，清空cookie，下次登录需要输入
效果图：
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<>Html
<div class="login-form-item"> <el-form :model="ValidateForm" ref="ValidateForm"
label-width="100px" class="demo-ruleForm"> <el-form-item prop="username" :rules
="[{ required: true, message: '用户名不能为空'} ]"> <span><i class="el-icon-user"></i><
/span><el-input type="username" v-model.number="ValidateForm.username"
autocomplete="off" clearable placeholder="用户名"></el-input> </el-form-item> <br>
<el-form-item prop="password" :rules="[{ required: true, message: '密码不能为空'}, ]">
<span><i class="el-icon-lock"></i></span><el-input type="password" v-model.
number="ValidateForm.password" autocomplete="off" clearable show-password
placeholder="密码"></el-input> </el-form-item> <br> <el-form-item prop="sidentify"
:rules="[ { required: true, message: '验证码不能为空'},]" > <el-row class="sidentify">
<el-col :span="21"> <el-input type="age" v-model="ValidateForm.sidentify"
autocomplete="off" placeholder="验证码"></el-input> </el-col> <el-col :span="3"
class="sidentify sidentify-img"> <sidentify :changeCode.sync='identifyCode' ref=
"switchSidentify"></sidentify> </el-col> </el-row> </el-form-item> <el-form-item
> <el-checkbox v-model="checked" class="sidentify">记住密码</el-checkbox> </el-form-
item> <el-form-item> <el-button type="primary" @click=
"submitForm('ValidateForm')" class="login-btn">登录</el-button> </el-form-item> </
el-form> </div>
加密方法我用的base64和CryptoJS 大家记得去下载
<>js部分：
登录
// 登录 submitForm(formName) { this.$refs[formName].validate((valid) => { if (
valid) { let username=this.ValidateForm.username; let pwd=this.ValidateForm.
password; let sidentify=this.ValidateForm.sidentify; // 验证码通过 if (sidentify ==
this.identifyCode){ this.request.post(this.api.login.logindo,{username:username,
pwd:pwd}).then((res)=>{ console.log(res); if (res.data.code == 200){ this.
$message({ message : '登录成功！', type : 'success' }) //调用check选中方法 this.checkedPwd(
username,pwd) this.$router.push({name:'Home'}) }else { this.$message({ message :
'账号或密码错误，请重新输入！', type : 'error' }) //清空 this.resetForm('ValidateForm') //刷新验证码
this.$refs.switchSidentify.changeCode() } }) }else { this.$message({ message :
'验证码输入错误，请重新输入！', type : 'error' }) this.$refs.switchSidentify.changeCode() this
.resetForm('ValidateForm') } } else { return false; } }); },
check方法：
checkedPwd(username,pwd){ // 记住密码进行cookie存储和密码加密 if (this.checked){ // base64
加密 let base64Pwd=Base64.encode(pwd); // Encrypt 加密 let cryptoJsPwd=CryptoJS.AES.
encrypt(base64Pwd,key).toString() // 账号密码保存天数 this.setCookie(username,
cryptoJsPwd,7) }else{ // 清空 this.clearCookie() } },
设置读取和清空cookie
// 设置cookie setCookie(c_name, c_pwd, exdays) { var exdate = new Date(); // 获取时间
exdate.setTime(exdate.getTime() + 24 * 60 * 60 * 1000 * exdays); // 保存的天数 //
字符串拼接cookie window.document.cookie = "username" + "=" + c_name +
";path=/;expires=" + exdate.toGMTString(); window.document.cookie = "password" +
"=" + c_pwd + ";path=/;expires=" + exdate.toGMTString(); }, // 读取cookie
getCookie: function() { if (document.cookie.length > 0) { //checked为true this.
checked=true var arr = document.cookie.split('; '); for (var i = 0; i < arr.
length; i++) { var arr2 = arr[i].split('='); if (arr2[0] == 'username') { this.
ValidateForm.username = arr2[1]; } else if (arr2[0] == 'password') { // Decrypt
解密 let bytes = CryptoJS.AES.decrypt(arr2[1],key) let originalText=bytes.toString
(CryptoJS.enc.Utf8) // base64解密 let pwd=Base64.decode(originalText) this.
ValidateForm.password = pwd; } } } }, // 清除cookie clearCookie: function() { this
.setCookie("", "", -1); // 修改2值都为空，天数为负1天就好了 },
一定要创建后读取cookie
created () { this.getCookie() },