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 。