Vue項目登錄功能中，保存用戶名和密碼，下次登錄的時候，用戶名和密碼顯示在表單上

界面

<template>
    <div class="login-wrap">
        <div class="ms-login">
            <div class="ms-title">後臺管理系統</div>
            <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="0px" class="ms-content">
                <el-form-item prop="username">
                    <el-input v-model="ruleForm.username" placeholder="請輸入用戶名">
                        <el-button slot="prepend" icon="el-icon-lx-people"></el-button>
                    </el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input type="password" placeholder="請輸入密碼" v-model="ruleForm.password"
                              @keyup.enter.native="submitForm('ruleForm')">
                        <el-button slot="prepend" icon="el-icon-lx-lock"></el-button>
                    </el-input>
                </el-form-item>
                <div class="login-btn">
                    <el-button type="primary" @click="submitForm('ruleForm')">登錄</el-button>
                </div>
               
            </el-form>
        </div>
    </div>
</template>

邏輯

<script>
    export default {
        data: function () {
            return {
                ruleForm: {
                    username: '',
                    password: ''
                },
                rules: {
                    username: [
                        {required: true, message: '請輸入用戶名', trigger: 'blur'}
                    ],
                    password: [
                        {required: true, message: '請輸入密碼', trigger: 'blur'}
                    ]
                }
            }
        },
				 //頁面加載調用獲取cookie值
				mounted() {
						this.getCookie();
				},
        methods: {
            submitForm(formName) {
                this.$refs[formName].validate((valid) => {
                    if (valid) {
                        this.$axios.post('admin/login',this.$qs.stringify(this.ruleForm))
												.then((res) => {
                            console.log(res);
                            if (res.data.code == 0) {
                                localStorage.setItem('ms_username', this.ruleForm.username);
																//保存用戶名和密碼到cookie
																this.setCookie(this.ruleForm.username,this.ruleForm.password,7);
																//跳轉
                                this.$router.push('/');
																this.$message.success(res.data.message);
                            } else {
                                console.log(res.data.message);
                                this.$message.warning(res.data.message);
                            }
                        }).catch((res) => {
                            console.log(res);
                        });
                    } else {
                        console.log('error submit!!');
                        return false;
                    }
                });
            },
						 //設置cookie
            setCookie(c_name, c_pwd, exdays) {
                var exdate = new Date(); //獲取時間
                exdate.setTime(exdate.getTime() + 24 * 60 * 60 * 1000 * exdays); //保存的天數
                //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();
            },
            //讀取cookie
            getCookie: function() {
                if (document.cookie.length > 0) {
                    var arr = document.cookie.split('; '); //這裏顯示的格式需要切割一下自己可輸出看下
                    for (var i = 0; i < arr.length; i++) {
                        var arr2 = arr[i].split('='); //再次切割
                        //判斷查找相對應的值
                        if (arr2[0] == 'userName') {
                            this.ruleForm.username = arr2[1]; //保存到保存數據的地方
                        } else if (arr2[0] == 'userPwd') {
                            this.ruleForm.password = arr2[1];
                        }
                    }
                }
            },
        }
    }
</script>

參考鏈接https://www.cnblogs.com/nxmin/p/8386031.html