Element-Ui

安装环境搭建

Element-Ul是饿了么前端团队推出的一款基于Vue.js 2.0 的桌面端UI框架,一套为开发者、设计师和产品经理准备的基于 Vue 2.0 的桌面端组件库,手机端有对应框架是Mint UI 。

中文文档:http://element-cn.eleme.io/#/zh-CN github地址:https://github.com/ElemeFE/element

1:安装node

端开发框架和环境都是需要 Node.js ,先安装node.js开发环境,vue的运行是要依赖于node的npm的管理工具来实现,下载https://nodejs.org/en/,安装完成之后,打开cmd开始输入命令。(我用的是win10系统,所以需要管理员权限,右键点击以管理员身份运行cmd),不然会出现很多报错。

2:查看node的版本号

下载好node之后,以管理员身份打开cmd管理工具,,输入 node -v ,回车,查看node版本号,出现版本号则说明安装成功。

输入命令: node -v

3:安装淘宝npm镜像

由于npm是国外的,使用起来比较慢,我们这里使用淘宝的cnpm镜像来安装vue. 淘宝的cnpm命令管理工具可以代替默认的npm管理工具。

输入命令:npm install -g cnpm --registry=https://registry.npm.taobao.org

4:安装全局vue-cli脚手架

淘宝镜像安装成功之后,我们就可以全局vue-cli脚手架,输入命令:cnpm install –global vue-cli 回车;验证是否安装成功,在命令输入vue,出来vue的信息,及说明安装成功;

输入命令:cnpm install --global vue-cli

5:开始进入主题,初始化一个vue项目

我这里是在d盘里面新建一个项目,先用d:的命令,回车键进入d盘;回车键默认创建项目信息。

vue init webpack itemname

出现这样的提示,初始化成功

运行初始化demo,输入命令npm run dev;运行一下初始后的demo,弹出访问地址,如果没有问题则进行安装elementUI;准备好好之后,开始引入饿了么elementUI组件。

6:安装 elementUI

npm i element-ui -S

快捷键ctrl+c,终止批处理操 作吗(Y/N),在输入命令npm i element-ui -S

注意:安装过程中出现这样的bug的时候,需要解决

解决办法:尝试 删除项目中的 package-lock.json 文件 和 node_modules 文件夹,然后再尝试 npm install.

成功安装组件显示如下

7:在components文件夹下面创建test.vue文件,复制一段elementUI官方文档的代码,进行测试

<template><el-menu :default-active="activeIndex2" class="el-menu-demo" mode="horizontal" @select="handleSelect" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b"><el-menu-item index="1">处理中心</el-menu-item><el-submenu index="2"><template slot="title">我的工作台</template><el-menu-item index="2-1">选项1</el-menu-item><el-menu-item index="2-2">选项2</el-menu-item><el-menu-item index="2-3">选项3</el-menu-item></el-submenu><el-menu-item index="3"><a href="https://www.ele.me" target="_blank">订单管理</a></el-menu-item></el-menu>
</template><script>export default {data() {return {activeIndex: '1',activeIndex2: '1'};},methods: {handleSelect(key, keyPath) {console.log(key, keyPath);}}}
</script>

8:在App.vue中引入test.vue

<template><div id="app"><img src="./assets/logo.png"><router-view/><Test></Test></div>
</template><script>import Test from './components/test.vue'export default {components:{Test,},name: 'App'
}
</script><style>
#app {font-family: 'Avenir', Helvetica, Arial, sans-serif;-webkit-font-smoothing: antialiased;-moz-osx-font-smoothing: grayscale;text-align: center;color: #2c3e50;margin-top: 60px;
}
</style>

9:打开main.js,加入element-ui的js和css

import ElementUI from 'element-ui' //element-ui的全部组件
import 'element-ui/lib/theme-chalk/index.css'//element-ui的css
Vue.use(ElementUI) //使用elementUI

10:再次运行,组件中的效果如下:

输入命令:

npm run dev

时间选择器

打开test.vue文件,开始写代码

<template><div><el-time-pickeris-rangev-model="value"range-separator="-"start-placeholder="开始时间"end-placeholder="结束时间"placeholder="选择时间范围"></el-time-picker></div>
</template>
<script>export default {data() {return {value: [new Date(2016, 9, 10, 8, 40), new Date(2016, 9, 10, 9, 40)],};}}
</script>

npm run dev 运行,浏览器显示如下,实现了一个简单的时间选择器

出现和隐藏动画

点击按钮的时候,元素会呈现一个出现和隐藏的动画功能。

<template><div><el-button @click="show = !show">点击按钮</el-button><div style="display: flex; margin-top: 20px; height: 100px;"><transition name="el-fade-in-linear"><div v-show="show" class="transition-box">我会消失在人海之中</div></transition></div></div>
</template>
<script>export default {data: () => ({show: true})}
</script>
<style>.transition-box {margin-bottom: 10px;width: 300px;height: 100px;border-radius: 4px;background-color: #42B983;text-align: center;color: #fff;padding: 40px 20px;box-sizing: border-box;margin-left: 520px;}
</style>

左侧导航栏

在用Element UI框架的时候

<template><div><el-row class="tac"><el-col :span="4">   <el-menudefault-active="2"class="el-menu-vertical-demo"@open="handleOpen"@close="handleClose"background-color="#545c64"text-color="#fff"active-text-color="#ffd04b"><el-submenu index="1"><template slot="title"><i class="el-icon-s-platform"></i><span>服务大厅</span></template><el-menu-item-group><el-menu-item index="1-1">在场服务</el-menu-item><el-menu-item index="1-2">历史服务</el-menu-item></el-menu-item-group></el-submenu><el-submenu index="2"><template slot="title"><i class="el-icon-s-tools"></i><span>系统设置</span></template><el-menu-item-group><el-menu-item index="1-1">权限管理</el-menu-item><el-menu-item index="1-2">角色管理</el-menu-item></el-menu-item-group></el-submenu><el-submenu index="3"><template slot="title"><i class="el-icon-user-solid"></i><span>人员数据</span></template><el-menu-item-group>        <el-menu-item index="1-1">人员数量</el-menu-item><el-menu-item index="1-2">人员位置</el-menu-item></el-menu-item-group></el-submenu>      <el-submenu index="4"><template slot="title"><i class="el-icon-message-solid"></i><span>健康报警</span></template><el-menu-item-group>       <el-menu-item index="1-1">心率报警</el-menu-item><el-menu-item index="1-2">血压报警</el-menu-item></el-menu-item-group></el-submenu>     </el-menu></el-col>
</el-row></div>
</template>
<script>export default {methods: {handleOpen(key, keyPath) {console.log(key, keyPath);},handleClose(key, keyPath) {console.log(key, keyPath);}}}
</script>

导航菜单效果如下所示

## 导航栏跳转路由

### 1:components 新建页面

### 2:打开app.vue写代码

<template><div><el-col :span="2">   <el-menu:default-active="this.$route.path" router mode="horizontal"class="el-menu-vertical-demo"@open="handleOpen"@close="handleClose"background-color="#545c64"text-color="#fff"active-text-color="#ffd04b"><el-menu-item v-for="(item,i) in navList" :key="i" :index="item.name"><template slot="title"><i class="el-icon-s-platform"></i><span> {{ item.navItem }}</span></template></el-menu-item></el-menu></el-col><router-view     class="menu-right"/></div>
</template>
<script>export default {data() { return { navList:[ {name:'/components/ServiceHall',navItem:'服务大厅'}, {name:'/components/Management',navItem:'权限管理'},{name:'/components/User',navItem:'用户管理'}, {name:'/components/Personnel',navItem:'人员数据'}, {name:'/components/Alarm',navItem:'报警中心'}, ] } },methods: {handleOpen(key, keyPath) {console.log(key, keyPath);},handleClose(key, keyPath) {console.log(key, keyPath);}}}
</script><style>.menu-right{margin-left:200px;}</style>

3:路由index.js

import Vue from 'vue'
import Router from 'vue-router'
import HelloWorld from '@/components/HelloWorld'
import ServiceHall from '@/components/ServiceHall'
import Management from '@/components/Management'
import User from '@/components/User'
import Personnel from '@/components/Personnel'
import Alarm from '@/components/Alarm'Vue.use(Router)export default new Router({routes: [{path: '/',name: 'HelloWorld',component: HelloWorld},{path: '/components/ServiceHall',name: 'ServiceHall',component: ServiceHall}, {path: '/components/Management',name: 'Management',component: Management},{path: '/components/User',name: 'User',component: User},{path: '/components/Personnel',name: 'Personnel',component: Personnel},{path: '/components/Alarm',name: 'Alarm',component: Alarm}]
})

4:新页面的内容

<template>  <div>我是权限管理页面</div>  
</template>
<script>
</script>
<style>
</style>

5:效果就可以看了

axios请求数据

1:进入项目,npm安装

   npm install axios --save

2.在main.js下引用axios

  import axios from 'axios'

3:准备json数据

自己写了一个json数据,放在服务器上,现在要通过vue项目调用数据 http://www.intmote.com/test.json

4:跨域问题,设置代理,利用proxyTable属性实现跨域请求

在config/index.js 里面找到proxyTable :{} ,然后在里面加入以下代码

   proxyTable: {'/api': {target: 'http://www.intmote.com',//设置你调用的接口域名和端口号 别忘了加httpchangeOrigin: true,//允许跨域pathRewrite: {'^/api': '' //这个是定义要访问的路径,名字随便写 }}
},

5:打开一个界面User.vue,开始写请求数据的方法

 methods: {getData() {axios.get('/api/test.json').then(response => {console.log(response.data);}, response => {console.log("error");});}}

User.vue参考代码:

<template><div id="app"></div>
</template>
<script>import axios from "axios";export default {name: "app",data() {return {itemList: []}},mounted() {this.getData();},methods: {getData() {axios.get('/api/test.json').then(response => {console.log(response.data);}, response => {console.log("error");});}}}
</script>

6:再次运行npm run dev

这个时候,我们可以看见,请求的数据

Mock的使用

1:在项目里面新建一个mock文件夹,在mock文件夹里面新建一个test.json文件

test.json:

{"first":[{"name":"520","nick":"我爱你"},{"name":"521","nick":"我愿意"},{"name":"1314","nick":"一生一世"}]}

2:在build目录下找到webpack.

// mock code
const express = require('express')
const app = express()
const posts = require('../mock/test.json') 
const routes = express.Router()
app.use('/api', routes)// 如果是post请求,那么将get改为post即可
devServer: {...before(app){app.get('/api/test', (req, res) => {res.json(posts)})}
}

 

dev.conf.js文件,编写以下代码

3:浏览器输入http://localhost:8080/api/test

成功看到模拟数据

4:使用第三方http请求库axios进行ajax请求

 methods: {getData() {axios.get('http://localhost:8080/api/test').then(response => {console.log(response.data);}, response => {console.log("error");});}}

vue页面代码参考

<template><div id="app"></div>
</template>
<script>import axios from "axios";export default {name: "app",data() {return {itemList: []}},mounted() {this.getData();},methods: {getData() {axios.get('http://localhost:8080/api/test').then(response => {console.log(response.data);}, response => {console.log("error");});}}}
</script>

5:在浏览器里面,我们可以看到,mock里面的数据请求成功显示如下

页面渲染

其实步骤很简单,代码如下

<template><div id="app"><div v-for="item in itemList"><span>{{item.name}}</span><span>{{item.nick}}</span></div></div>
</template>
<script>import axios from "axios";export default {name: "app",data() {return {itemList: []}},mounted() {this.getData();},methods: {getData() {axios.get('http://localhost:8080/api/test').then(response => {console.log(response.data);this.itemList =response.data.first;}, response => {console.log("error");});}}}
</script>

打开界面,既可以看到,所需要的数据一家展示在前端的界面了

axios表格分页

接着之前的项目继续写,打开一个vue界面,在里面写如下代码:

<template><div><el-table :data="tableData.slice((currentPage-1)*pagesize,currentPage*pagesize)" style="width: 100%"><el-table-column prop="id" label="日期" width="180"></el-table-column><el-table-column prop="name" label="姓名" width="180"></el-table-column><el-table-column prop="price" label="地址"></el-table-column></el-table><div class="pagination"><el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="currentPage" :page-sizes="[5, 10, 20, 40]" :page-size="pagesize" layout="total, sizes,prev, pager, next" :total="tableData.length" prev-text="上一页" next-text="下一页"></el-pagination></div></div>
</template>
<script>import axios from "axios";export default {name: "app",data() {return {        currentPage: 1, //默认显示页面为1pagesize: 5, //    每页的数据条数tableData: [], //需要data定义一些,tableData定义一个空数组,请求的数据都是存放这里面}},mounted() {this.getData();},methods: {getData() {axios.get('http://localhost:8080/api/test').then(response => {console.log(response.data);this.tableData = response.data;}, response => {console.log("error");});},//每页下拉显示数据handleSizeChange: function(size) {this.pagesize = size;/*console.log(this.pagesize) */},//点击第几页handleCurrentChange: function(currentPage) {this.currentPage = currentPage;/*console.log(this.currentPage) */},}}
</script>

test.json

 [  {  "id": 0,  "name": "Item 0",  "price": "徐家汇"  },  {  "id": 1,  "name": "Item 1",  "price": "$1"  },  {  "id": 2,  "name": "Item 2",  "price": "$2"  },  {  "id": 3,  "name": "Item 3",  "price": "徐家汇"  },  {  "id": 4,  "name": "Item 4",  "price": "徐家汇"  },  {  "id": 5,  "name": "Item 5",  "price": "$5"  },  {  "id": 6,  "name": "Item 6",  "price": "$6"  },  {  "id": 7,  "name": "Item 7",  "price": "$7"  },  {  "id": 8,  "name": "Item 8",  "price": "徐家汇"  },  {  "id": 9,  "name": "Item 9",  "price": "$9"  },  {  "id": 10,  "name": "Item 10",  "price": "$10"  },  {  "id": 11,  "name": "Item 11",  "price": "$11"  },  {  "id": 12,  "name": "Item 12",  "price": "徐家汇"  },  {  "id": 13,  "name": "Item 13",  "price": "$13"  },  {  "id": 14,  "name": "Item 14",  "price": "$14"  },  {  "id": 15,  "name": "Item 15",  "price": "$15"  },  {  "id": 16,  "name": "Item 16",  "price": "徐家汇"  },  {  "id": 17,  "name": "Item 17",  "price": "$17"  },  {  "id": 18,  "name": "Item 18",  "price": "$18"  },  {  "id": 19,  "name": "Item 19",  "price": "徐家汇"  },{  "id": 20,  "name": "Item 20",  "price": "$20"  }  ]  

效果如下 

到这里就成功的实现了一个表格和分页了,数据是用mock模拟的,实际中换成后端的接口就可以了 。

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