es6导入导出语法，vue-router简单使用，登录跳转案例，scoped的使用

es6导入导出语法

默认导出和导入

导出语法

只导出变量：export default name

只导出函数：export default add

导出对象：export default {name,add}

export default {
name:"彭于晏",
add: (a,b)=>{
return a+b
}
}

导入语法

相对导入，相对于当前文件

import lqz from './lyz/utils'

绝对导入--》开始导入的路径 src路径，但是需要写个 @

import lqz from '@/lyz/utils'

命名导出导入

导出

export const age = 99
export const add = (a, b) => a + b
export const showName = name => {
console.log(name)
}

export const obj={
name:'lyz',
show(){
alert('show')
}
}

导入

import {showName,obj} from '@/lyz/common.js'
以后可以使用showName 函数
以后可以使用obj 对象，又可以点 obj.xx

如果包下有个 index.js 直接导到index.js上一次即可

vue-router简单使用

# 单页面应用---》只要一个html--》要实现页面跳转的效果---》其实就是组件的跳转
# 组件跳转，需要借助于第三方：vue-router 已经装了

# 1 需要在App.vue 写个标签---以后不要再写任何其他东西了
   <template>
<div id="app">
<router-view>
</router-view>
</div>
</template>

# 2 在 router---index.js---注册组件
   # 1 导入
import LoginView from "@/views/LoginView";
import IndexView from "@/views/IndexView";
import AboutView from "@/views/AboutView";
const routes = [
# 2 注册路由
{
path: '/',
name: 'home',
component: IndexView
},
{
path: '/login',
name: 'login',
component: LoginView
},
{
path: '/about',
name: 'about',
component: AboutView
},
]

# 3 以后再浏览器访问不同路径，就会显示不同组件（页面组件--->views中）

登录跳转案例

前端

views.IndexView.vue

<script>
import axios from "axios";
export default {name: 'IndexView',data(){return {filmlist:[]}},created() {axios.get('http://127.0.0.1:8000/film/').then(res=>{this.filmlist=res.data.results})}
}
</script><template><div><h1>首页</h1><div v-for="film in filmlist"><img :src="film.poster"  height="200px" alt=""><div><h3>{{film.name}}</h3><p>主演：<span v-for="item in film.actors">{{item.name}} &nbsp;</span></p><p>{{film.nation}}|{{film.runtime}}</p></div></div></div></template><style scoped></style>

views.LoginView.vue

<template><div><h1>登录</h1><p>用户名：<input type="text" v-model="username"></p><p>密码：<input type="text" v-model="password"></p><p><button @click="handleSubmit">登录</button></p></div>
</template><script>
import http from "axios";export default {username: 'LoginView',data() {return {username: '',password: '',}},methods: {handleSubmit() {// 发送ajax请求http.post('http://127.0.0.1:8000/login/', {username: this.username,password: this.password}).then(response => {if (response.data.code == 100) {// 跳转this.$router.push('/')} else {alert(response.data.msg)}})}}
}
</script><style></style>

router.index.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import IndexView from "@/views/IndexView.vue";
import LoginView from "@/views/LoginView.vue";Vue.use(VueRouter)const routes = [{path: '/',name: 'index',component: IndexView},{path: '/login',name: 'lgoin',component: LoginView}
]const router = new VueRouter({mode: 'history',base: process.env.BASE_URL,routes
})export default router

后端

settings.py

from pathlib import Path# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-f7fdk5#b(wrypoemzgkq!@lb&!3vrc)7&hg4dbdz+t57!(56o1'# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = TrueALLOWED_HOSTS = []# Application definitionINSTALLED_APPS = ['django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles','app01.apps.App01Config','corsheaders'
]MIDDLEWARE = ['django.middleware.security.SecurityMiddleware','django.contrib.sessions.middleware.SessionMiddleware','django.middleware.common.CommonMiddleware','django.middleware.csrf.CsrfViewMiddleware','django.contrib.auth.middleware.AuthenticationMiddleware','django.contrib.messages.middleware.MessageMiddleware','django.middleware.clickjacking.XFrameOptionsMiddleware','corsheaders.middleware.CorsMiddleware',
]ROOT_URLCONF = 'djangoProject0112.urls'TEMPLATES = [{'BACKEND': 'django.template.backends.django.DjangoTemplates','DIRS': [BASE_DIR / 'templates'],'APP_DIRS': True,'OPTIONS': {'context_processors': ['django.template.context_processors.debug','django.template.context_processors.request','django.contrib.auth.context_processors.auth','django.contrib.messages.context_processors.messages',],},},
]WSGI_APPLICATION = 'djangoProject0112.wsgi.application'# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databasesDATABASES = {'default': {'ENGINE': 'django.db.backends.sqlite3','NAME': BASE_DIR / 'db.sqlite3',}
}# Password validation
# https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validatorsAUTH_PASSWORD_VALIDATORS = [{'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',},{'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',},{'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',},{'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',},
]# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/LANGUAGE_CODE = 'zh-hans'TIME_ZONE = 'UTC'USE_I18N = TrueUSE_L10N = TrueUSE_TZ = True# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/STATIC_URL = '/static/'# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-fieldDEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'AUTH_USER_MODEL = 'app01.UserInfo'SIMPLE_JWT = {"TOKEN_OBTAIN_SERIALIZER": "app01.serializer.LoginSerializer",
}CORS_ORIGIN_ALLOW_ALL = True
CORS_ALLOW_METHODS = ('DELETE','GET','OPTIONS','PATCH','POST','PUT','VIEW',
)
CORS_ALLOW_HEADERS = ('XMLHttpRequest','X_FILENAME','accept-encoding','authorization','content-type','dnt','origin','user-agent','x-csrftoken','x-requested-with','Pragma','token'
)REST_FRAMEWORK = {'EXCEPTION_HANDLER': 'app01.exceptions.common_exception_handler',
}

urls.py


from django.contrib import admin
from django.urls import path
from rest_framework_simplejwt.views import token_obtain_pair
from app01 import views
urlpatterns = [path('admin/', admin.site.urls),path('login/',token_obtain_pair),path('film/',views.FilmView.as_view()),
]

exceptions.py

from rest_framework.views import exception_handler
from rest_framework.response import Responsedef common_exception_handler(exc,context):res=exception_handler(exc,context)if res:  #drf异常msg=res.data.get('detail') or res.data or '系统异常,请联系系统管理员'return Response({'code':999,'msg':msg})else:return Response({'code':888,'msg':'系统异常,请联系系统管理员 %s'%str(exc)})

serializer.py

from rest_framework_simplejwt.serializers import TokenObtainPairSerializerclass LoginSerializer(TokenObtainPairSerializer):def validate(self, attrs):res=super().validate(attrs)user=self.userdata={'code':100,'msg':'登录成功','username':user.username,'gender':user.get_gender_display()}data.update(res)return data

views.py

import jsonfrom django.shortcuts import render
from rest_framework.response import Response
from rest_framework.views import APIView
class FilmView(APIView):def get(self,request):with open('./film.json','rt',encoding='utf-8')as f:res=json.load(f)return Response(res)

film.json

{"code":100,"results":[{"filmId":6664,"name":"年会不能停！","poster":"https://pic.maizuo.com/usr/movie/6b59b017d4dc427551d8ad530c009f5c.jpg","actors":[{"name":"董润年","role":"导演","avatarAddress":"https://pic.maizuo.com/usr/movie/ed9a520f233f9fe5dd01e0afea67b890.jpg"},{"name":"大鹏","role":"胡建林","avatarAddress":"https://pic.maizuo.com/usr/movie/75741ac19a8019deccf3a9ba8709dc49.jpg"},{"name":"白客","role":"马杰","avatarAddress":"https://pic.maizuo.com/usr/movie/bd23f041d10ca51f4d6bc2060ecdf196.jpg"},{"name":"庄达菲","role":"潘怡然","avatarAddress":"https://pic.maizuo.com/usr/movie/eb34beaaac4ed83e016bde7eed9c7549.jpg"},{"name":"王迅","role":"庄正直","avatarAddress":"https://pic.maizuo.com/usr/movie/e6d3df29a73643f18e142ffcf029a8bd.jpg"}],"director":"董润年","category":"喜剧|剧情","synopsis":"犒劳辛苦一年的自己，来影院大笑解压跨年！国民级喜剧人年底大聚会，真实还原打工人精神状态！钳工胡建林 (大鹏 饰)在集团裁员之际阴差阳错被调入总部，裹挟在“错调”事件中的人事经理马杰 (白客 饰) 为保饭碗被迫为其隐瞒四处周旋。从“工厂”到“大厂”，从“蓝领”变“金领”，胡建林因与大厂环境格格不入而笑料百出，也像一面“职场照妖镜”照出职场众生相......胡建林为何能在裁员之际一路升职加薪制霸大厂？马杰又能否在“错调”事件中全身而退？这场离谱的“错调”背后又隐藏着什么惊天大瓜……","filmType":{"name":"4D","value":13},"nation":"中国大陆","language":"","videoId":"","premiereAt":1703808000,"timeType":3,"runtime":117,"grade":"7.2","item":{"name":"4D","type":13},"isPresale":true,"isSale":false},{"filmId":6661,"name":"金手指","poster":"https://pic.maizuo.com/usr/movie/7c6fc744ab6efc08696fd1a8db5ede3b.jpg","actors":[{"name":"庄文强","role":"导演","avatarAddress":"https://pic.maizuo.com/usr/movie/c8a01acf59a22446204480d4f182997c.jpg"},{"name":"梁朝伟","role":"程一言","avatarAddress":"https://pic.maizuo.com/usr/movie/dde9116fbb432a327cc2f71e9603da58.jpg"},{"name":"刘德华","role":"刘启源","avatarAddress":"https://pic.maizuo.com/usr/movie/a5fc45490b819cda18057b127816b7a3.jpg"},{"name":"蔡卓妍","role":"张嘉文","avatarAddress":"https://pic.maizuo.com/usr/movie/6ee9dac0b4426320f7f820c82cdb29f4.jpg"},{"name":"任达华","role":"曾剑桥","avatarAddress":"https://pic.maizuo.com/usr/movie/63f8acdb408dd7836eda9a442cdb556e.jpg"}],"director":"庄文强","category":"剧情|犯罪","synopsis":"偷渡穷光蛋惊天逆袭，用100块赚到100亿？比爽文还刺激！梁朝伟刘德华二十年后再合体，极致演绎跨年档最受期待现实主义“暴富”大片！揭秘轰动全球的真实“发财传奇”！看《金手指》，狂享奢华逆袭，一起暴富跨年！上市公司嘉文集团在短短几年间从默默无名到风生水起，再到没落清盘，市值蒸发超过一百亿。幕后老板程一言（梁朝伟 饰）也从万众瞩目的股民偶像变成人人喊打的过街老鼠。高级调查主任刘启源（刘德华 饰）长达十五年锲而不舍地搜证和跨境调查，消耗超过两亿诉讼费，竟发现局中有局案中有案，牵涉数条人命并波及香港整个上流社会，究竟谁在幕后？谁能逃脱？谁会出局？","filmType":{"name":"2D","value":1},"nation":"中国大陆,中国香港","language":"","videoId":"","premiereAt":1703894400,"timeType":3,"runtime":125,"grade":"7.5","item":{"name":"2D","type":1},"isPresale":true,"isSale":false},{"filmId":6677,"name":"潜行","poster":"https://pic.maizuo.com/usr/movie/7e2625801ed632f56d8ede5325ff73dd.jpg","actors":[{"name":"关智耀","role":"导演","avatarAddress":"https://pic.maizuo.com/usr/movie/1a447bd802546aaf91169a32d1145248.jpg"},{"name":"刘德华","role":"演员","avatarAddress":"https://pic.maizuo.com/usr/movie/a5fc45490b819cda18057b127816b7a3.jpg"},{"name":"林家栋","role":"演员","avatarAddress":"https://pic.maizuo.com/usr/movie/8c48d0deacebd51850d1e7f1750225d7.jpg"},{"name":"彭于晏","role":"演员","avatarAddress":"https://pic.maizuo.com/usr/movie/275a877d692f42246469d39d910b2c2e.jpg"},{"name":"刘雅瑟","role":"演员","avatarAddress":"https://pic.maizuo.com/usr/movie/b04fb03af43c87854fe63d045387efe3.jpg"}],"director":"关智耀","category":"剧情|犯罪","synopsis":"年度犯罪动作巨制，刘德华十六年后再演反派！隐蔽的暗网成为新型贩毒的温床，一批重达数吨的毒品秘密抵达香港。形势紧迫，警方将动用一切手段，抓捕代号“老板”的幕后毒枭。更惊人的巨额交易，更难测的诡秘行踪，警方将如何面对史上最强劲的对手…","filmType":{"name":"4D","value":13},"nation":"中国大陆","language":"","videoId":"","premiereAt":1703808000,"timeType":3,"runtime":114,"grade":"7.6","item":{"name":"4D","type":13},"isPresale":true,"isSale":false},{"filmId":6666,"name":"一闪一闪亮星星","poster":"https://pic.maizuo.com/usr/movie/b5ef931e6d7f3419dbc2e196afaf1fc7.jpg","actors":[{"name":"陈小明","role":"导演","avatarAddress":"https://pic.maizuo.com/usr/movie/1344414485c7f694a815c16f305bd234.jpg"},{"name":"章攀","role":"导演","avatarAddress":"https://pic.maizuo.com/usr/movie/36f40652ea04bb77dc1cddfb33ff5b72.jpg"},{"name":"屈楚萧","role":"张万森","avatarAddress":"https://pic.maizuo.com/usr/movie/4b52f56805599eafcdb33e84ff8b1d17.jpg"},{"name":"张佳宁","role":"林北星","avatarAddress":"https://pic.maizuo.com/usr/movie/4c04863d11d0d5eadb31ed9517b8f4b7.jpg"},{"name":"傅菁","role":"高歌","avatarAddress":"https://pic.maizuo.com/usr/movie/987deda7f7f3b9f5a7f5f4c3dfe380dd.jpg"}],"director":"陈小明|章攀","category":"爱情|奇幻","synopsis":"现象级爆款剧集同名电影《一闪一闪亮星星》，原班人马再续纯爱故事，令无数观众翘首以盼的纯爱时空再启，奔赴甜虐暗恋！张万森（屈楚萧 饰）计划在高考后向暗恋已久的女生林北星（张佳宁 饰） 表白，突如其来的演唱会事故却让一切变成了一场无可挽回的悲剧，没想到的是，痛苦无助的张万森竟意外重启了这个夏天，再次回到悲剧发生前的林北星身边，而重启夏天的秘密，仿佛没有想象中那么简单……这一次，拼尽全力的张万森能否成功守护林北星，让所有刻骨铭心的遗憾都得以圆满？星河流转中的某个瞬间，青春里的那场绵绵大雪，能不能落在相爱的两人身上？","filmType":{"name":"4D","value":13},"nation":"中国大陆","language":"","videoId":"","premiereAt":1703894400,"timeType":3,"runtime":107,"grade":"7","item":{"name":"4D","type":13},"isPresale":true,"isSale":false},{"filmId":6681,"name":"海王2：失落的王国","poster":"https://pic.maizuo.com/usr/movie/94d069d3e037bb221d7b4b581ccaff51.jpg","actors":[{"name":"温子仁","role":"导演","avatarAddress":"https://pic.maizuo.com/usr/movie/92ffc5d6b92f8b0056c40f36e870058a.jpg"},{"name":"杰森·莫玛","role":" 海王 / 亚瑟·库瑞 Aquaman / Arthur Curry","avatarAddress":"https://pic.maizuo.com/usr/movie/09387c9db47d1c5281122cf0f0d8e564.jpg"},{"name":"帕特里克·威尔森","role":" 奥姆王 / 海洋领主 Orm / Ocean Master","avatarAddress":"https://pic.maizuo.com/usr/movie/702e000b260107ac3c1f91a587826489.jpg"},{"name":"安柏·赫德","role":" 湄拉 Mera","avatarAddress":"https://pic.maizuo.com/usr/movie/e0dcf92b6ba1fb04dc25bcbd47978d8b.jpg"},{"name":"叶海亚·阿卜杜勒-迈丁","role":" 黑蝠鲼 Black Manta","avatarAddress":"https://pic.maizuo.com/usr/movie/0306404ed5846e8e15706173ce175168.jpg"}],"director":"温子仁","category":"动作|冒险|奇幻","synopsis":"惊涛再起，王者归来！《海王2：失落的王国》讲述了海王的全新传奇。在上一次试图击败海王未果后，黑蝠鲼依然不甘放弃为父报仇，誓要消灭海王。这一次，他找到了传说中的黑暗三叉戟，释放出古老的邪恶力量，比以往更来势汹汹。为了与之抗衡，海王向被囚禁狱中的弟弟奥姆（也是前亚特兰蒂斯国王）求助，组成了出乎意料的联盟。他俩必须抛弃前仇旧怨，携手并肩作战，才能从即将到来的灾难中保卫王国，拯救家人，拯救世界。","filmType":{"name":"3D","value":2},"nation":"美国","language":"","videoId":"","premiereAt":1703030400,"timeType":3,"runtime":125,"grade":"7.1","item":{"name":"3D","type":2},"isPresale":true,"isSale":false},{"filmId":6660,"name":"三大队","poster":"https://pic.maizuo.com/usr/movie/88ea8dff563db98b06efcfc07acf5283.jpg","actors":[{"name":"戴墨","role":"导演","avatarAddress":"https://pic.maizuo.com/usr/movie/7d35c5ad443c64db177b335dc52d8726.jpg"},{"name":"张译","role":" 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}

scoped的使用

#1 以后css样式，都写在vue组件的 <style> 标签中
<style scoped>
h1 {
background-color: aqua;
}
</style>

#2 以后在 style标签上写 scoped 这个样式只在当前组件中生效
<style scoped>
h1 {
background-color: aqua;
}
</style>

elementui使用

# 自己写样式---》copy别人的

# 使用第三方ui库
   -Element UI 2.x 3.x
-Ant Design of Vue：web端
-Vant UI ：移动端ui


# elementui
   1 安装：cnpm i element-ui -S
2 main.js中引入
import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.use(ElementUI);