Vue implements the method of remembering passwords to cookies

The general idea is to save/retrieve/delete cookies; every time you enter the login page, read the cookie first. If there is account information in the cookie of the browser, it will be automatically filled in the login box and saved. The cookie is used to determine whether the current user has checked Remember Password after logging in successfully. If so, the account information is saved in the cookie.

Functions implemented:

1. Check the Remember Password checkbox and when you click login, the account number and password will be saved to cookies and automatically displayed in the form next time you log in
2 .Uncheck, when you click login, the value previously saved to the cookie will be cleared. Next time you log in, you need to manually enter

and go directly to the main code

HTML part

<p class="ms-login">
        <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="0px" class="demo-ruleForm">
            <el-form-item prop="username">
                <el-input v-model="ruleForm.username" placeholder="用户名"></el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input type="password" placeholder="密码" v-model="ruleForm.password" @keyup.enter.native="submitForm(&#39;ruleForm&#39;)"></el-input>
            </el-form-item>
            <!-- `checked` 为 true 或 false -->
            <el-checkbox v-model="checked">记住密码</el-checkbox>
            <br>
            <br>
            <p class="login-btn">
                <el-button type="primary" @click="submitForm(&#39;ruleForm&#39;)">登录</el-button>
            </p>
        </el-form>
    </p>

JS Part of the cookie information in

    //页面加载调用获取cookie值
    mounted() {
        this.getCookie();
    },
    methods: {
        submitForm(formName) {
                         const self = this;
                        //判断复选框是否被勾选 勾选则调用配置cookie方法
                        if (self.checked == true) {
                            console.log("checked == true");
                            //传入账号名，密码，和保存天数3个参数
                            self.setCookie(self.ruleForm.username, self.ruleForm.password, 7);
                        }else {
                          console.log("清空Cookie");
                          //清空Cookie
                          self.clearCookie();
                        }
                        
                        //与后端请求代码，本功能不需要与后台交互所以省略
                        
                        console.log("登陆成功");
                  
                });
            },
            //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 = "userPwd" + "=" + c_pwd + ";path=/;expires=" + exdate.toGMTString();
            },
            //读取cookie
            getCookie: function() {
                if (document.cookie.length > 0) {
                    var arr = document.cookie.split('; '); //这里显示的格式需要切割一下自己可输出看下
                    for (var i = 0; i < arr.length; i++) {
                        var arr2 = arr[i].split('='); //再次切割
                        //判断查找相对应的值
                        if (arr2[0] == 'userName') {
                            this.ruleForm.username = arr2[1]; //保存到保存数据的地方
                        } else if (arr2[0] == 'userPwd') {
                            this.ruleForm.password = arr2[1];
                        }
                    }
                }
            },
            //清除cookie
            clearCookie: function() {
                this.setCookie("", "", -1); //修改2值都为空，天数为负1天就好了
            }

is as shown below. Pay attention to the expire/Max-Age expiration time of the cookie here. This time is GMT, the unified time in the world. GMT+8 hours is Beijing time. .

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