4、前端导航栏组件

Header.vue代码修订

<template>
    <div class="header-box">
        <div class="header">
            <div class="content">
                <div class="logo full-left">
                    <router-link to="/"><img @click="jump('/')" src="@/assets/img/logo.svg" alt=""></router-link>
                </div>
                <ul class="nav full-left">
                    <li v-for="nav in nav_list" :key="nav.name">
                        <span @click="jump(nav.link)" :class="this_nav==nav.link?'this':''">{{nav.name}}</span>
                    </li>
                </ul>


                <!-- 改造的部分 -->
                <div v-if="token" class="login-bar full-right">
                    <div class="shop-cart full-left">
                        <img src="@/assets/img/cart.svg" alt="">
                        <span><router-link to="/cart">购物车</router-link></span>
                    </div>
                    <div class="login-box login-box1 full-left">
                        <router-link to="">学习中心</router-link>
                        <el-menu width="200" id="member" class="el-menu-demo full-right" mode="horizontal">
                            <el-submenu index="2">
                                <template slot="title">
                                    <router-link to=""><img src="@/assets/img/logo@2x.png" alt=""></router-link>
                                </template>
                                <el-menu-item index="2-1">我的账户</el-menu-item>
                                <el-menu-item index="2-2">我的订单</el-menu-item>
                                <el-menu-item index="2-3"><span @click="logout">退出登录</span></el-menu-item>
                            </el-submenu>
                        </el-menu>
                    </div>
                </div>
                <div v-if="!token" class="login-bar full-right">
                    <div class="shop-cart full-left">
                        <img src="@/assets/img/cart.svg" alt="">
                        <span><router-link to="/cart">购物车</router-link></span>
                    </div>
                    <div class="login-box login-box2 full-left">
                        <router-link to="/login"><span>登录</span></router-link>
                        &nbsp;|&nbsp;
                        <router-link to="/register"><span>注册</span></router-link>
                    </div>
                </div>

            </div>
        </div>
    </div>
</template>

<script>
    export default {
        name: "Header",
        data() {
            return {
                token: localStorage.token || sessionStorage.token,
                this_nav: "",
                nav_list: [],
            }
        },
        created() {
            this.this_nav = localStorage.this_nav;

            let _this = this;
            // 获取服务端的导航信息
            this.$axios({
                url: this.$settings.Host + "home/nav/header/"
            }).then(function (response) {
                _this.nav_list = response.data
            }).catch(function (error) {
                window.console.log(error)
            });
        },
        methods: {
            jump(location) {
                localStorage.this_nav = location;
                // vue-router除了提供router-link标签跳转页面以外，还提供了 js跳转的方式
                this.$router.push(location);
            },
            // 改造的部分
            logout() {
                // 重置token
                this.token = false;
                // 移除用户登录信息
                sessionStorage.clear();
                localStorage.clear();
                // 退出登录提示
                let _this = this;
                _this.$message({
                    message: '退出登录成功！',
                    type: 'success',
                    duration: '1500',
                    onClose() {
                        // 跳转到首页
                        _this.$router.push("/");
                    }
                });
            }
        },

    }
</script>

<style scoped>
    .header-box {
        height: 80px;
    }

    .header {
        width: 100%;
        height: 80px;
        box-shadow: 0 0.5px 0.5px 0 #c9c9c9;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        margin: auto;
        z-index: 99;
        background: #fff;
    }

    .header .content {
        max-width: 1200px;
        width: 100%;
        margin: 0 auto;
    }

    .header .content .logo {
        height: 80px;
        line-height: 80px;
        margin-right: 50px;
        cursor: pointer; /* 设置光标的形状为爪子 */
    }

    .header .content .logo img {
        vertical-align: middle;
    }

    .header .nav li {
        float: left;
        height: 80px;
        line-height: 80px;
        margin-right: 30px;
        font-size: 16px;
        color: #4a4a4a;
        cursor: pointer;
    }

    .header .nav li span {
        padding-bottom: 16px;
        padding-left: 5px;
        padding-right: 5px;
    }

    .header .nav li span a {
        display: inline-block;
    }

    .header .nav li .this {
        color: #4a4a4a;
        border-bottom: 4px solid #ffc210;
    }

    .header .nav li:hover span {
        color: #000;
    }

    .header .login-bar {
        height: 80px;
    }

    .header .login-bar .shop-cart {
        margin-right: 20px;
        border-radius: 17px;
        background: #f7f7f7;
        cursor: pointer;
        font-size: 14px;
        height: 28px;
        width: 88px;
        margin-top: 30px;
        line-height: 32px;
        text-align: center;
    }

    .header .login-bar .shop-cart:hover {
        background: #f0f0f0;
    }

    .header .login-bar .shop-cart img {
        width: 15px;
        margin-right: 4px;
        margin-left: 6px;
    }

    .header .login-bar .shop-cart span {
        margin-right: 6px;
    }

    .header .login-bar .login-box {
        margin-top: 33px;
    }

    .header .login-bar .login-box span {
        color: #4a4a4a;
        cursor: pointer;
    }

    .header .login-bar .login-box span:hover {
        color: #000000;
    }

    /*改造的部分*/
    #member {
        border: none;
        margin-top: -22px;
    }

    #member img {
        width: 26px;
        height: 26px;
        border-radius: 50%;
    }

</style>