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A detailed introduction to the ElementUI component library

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2022-08-10 17:01:544055browse

This article brings you relevant knowledge about vue, which mainly introduces related issues about the ElementUI component library. The ElementUI component library is a set of desktop component libraries based on vue2.0 , provides a wealth of components to help developers quickly build pages. Let’s take a look at them. I hope it will be helpful to everyone.

A detailed introduction to the ElementUI component library

【Related recommendations: javascript video tutorial, vue.js tutorial】

ElementUI introduction

ElementUI is a set of desktop component libraries based on VUE2.0. ElementUI provides a rich set of components to help developers quickly build pages with powerful functions and unified styles.

Official website address: http://element-cn.eleme.io/#/zh-CN

Introduce js and css files on the page to start using it, as follows: 

<!-- 引入ElementUI样式 -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<!-- 引入ElementUI组件库 -->
<script src="https://unpkg.com/element-ui/lib/index.js"></script>

Container Layout Container

Container component used for layout, convenient for quickly building the basic structure of the page:

<el-container>: outer container . When the child elements contain <el-header> or <el-footer>, all child elements will be arranged vertically up and down, otherwise they will be arranged horizontally left and right

<el-header>：Top bar container

<el-aside>：Side bar container

&lt ;el-main>：Main area container

<el-footer>：Bottom column container

<body>
  <div id="app">
    <el-container>
      <el-header>Header</el-header>
      <el-container>
        <el-aside width="200px">Aside</el-aside>
        <el-container>
          <el-main>Main</el-main>
          <el-footer>Footer</el-footer>
        </el-container>
      </el-container>
    </el-container>
  </div>
  <style>
    .el-header, .el-footer {
      background-color: #B3C0D1;
      color: #333;
      text-align: left;
      line-height: 60px;
    }

    .el-aside {
      background-color: #D3DCE6;
      color: #333;
      text-align: center;
      line-height: 200px;
    }

    .el-main {
      background-color: #E9EEF3;
      color: #333;
      text-align: center;
      line-height: 590px;
    }
  </style>
</body>
<script>
  new Vue({
    el:'#app'
  });
</script>

Dropdown drop-down menu

Collapse an action or menu into a drop-down menu. 

<el-dropdown split-button size="small" trigger="click">
  个人中心
  <el-dropdown-menu>
    <el-dropdown-item >退出系统</el-dropdown-item>
    <el-dropdown-item divided>修改密码</el-dropdown-item>
    <el-dropdown-item divided>联系管理员</el-dropdown-item>
  </el-dropdown-menu>
</el-dropdown>

NavMenu Navigation Menu

A menu that provides navigation functions for the website. 

<el-menu>
  <el-submenu index="1">
    <template slot="title">
      <i class="el-icon-location"></i>
      <span slot="title">导航一</span>
    </template>
    <el-menu-item>选项1</el-menu-item>
    <el-menu-item>选项2</el-menu-item>
    <el-menu-item>选项3</el-menu-item>
  </el-submenu>
  <el-submenu index="2">
    <template slot="title">
      <i class="el-icon-menu"></i>
      <span slot="title">导航二</span>
    </template>
    <el-menu-item>选项1</el-menu-item>
    <el-menu-item>选项2</el-menu-item>
    <el-menu-item>选项3</el-menu-item>
  </el-submenu>
</el-menu>

Table Table

is used to display multiple pieces of data with similar structure. The data can be sorted, filtered, compared or other customized operations. 

<el-table :data="tableData" stripe>
  <el-table-column prop="date" label="日期"></el-table-column>
  <el-table-column prop="name" label="姓名"></el-table-column>
  <el-table-column prop="address" label="地址"></el-table-column>
  <el-table-column label="操作" align="center">
    <!--
		slot-scope：作用域插槽，可以获取表格数据
    	scope：代表表格数据，可以通过scope.row来获取表格当前行数据，scope不是固定写法
    -->
    <template slot-scope="scope">
      <el-button type="primary" size="mini" @click="handleUpdate(scope.row)">编辑</el-button>
      <el-button type="danger" size="mini"  @click="handleDelete(scope.row)">删除</el-button>
    </template>
  </el-table-column>
</el-table>
<script>
  new Vue({
    el:'#app',
    data:{
      tableData: [{
        date: '2016-05-02',
        name: '王小虎',
        address: '上海市普陀区金沙江路 1518 弄'
      }, {
        date: '2016-05-04',
        name: '王小虎',
        address: '上海市普陀区金沙江路 1517 弄'
      }, {
        date: '2016-05-01',
        name: '王小虎',
        address: '上海市普陀区金沙江路 1519 弄'
      }]
    },
    methods:{
      handleUpdate(row){
        alert(row.date);
      },
      handleDelete(row){
        alert(row.date);
      }
    }
  });
</script>

Pagination Pagination

When the amount of data is too large, use paging to break down the data. 

<!--
	current-change：内置的事件，当前页码改变时会触发，可以获取到改变之后的页码
-->
<el-pagination
               @current-change="handleCurrentChange"
               current-page="5"
               page-size="10"
               layout="total, prev, pager, next, jumper"
               :total="305">
</el-pagination>
<script>
  new Vue({
    el:'#app',
    methods:{
      handleCurrentChange(page){
        alert(page);
      }
    }
  });
</script>

Message message prompt

is often used as a feedback prompt after active operations. 

<el-button :plain="true" @click="open1">消息</el-button>
<el-button :plain="true" @click="open2">成功</el-button>
<el-button :plain="true" @click="open3">警告</el-button>
<el-button :plain="true" @click="open4">错误</el-button>
<script>
  new Vue({
    el: '#app',
    methods: {
      open1() {
        this.$message('这是一条消息提示');
      },
      open2() {
        this.$message({
          message: '恭喜你，这是一条成功消息',
          type: 'success'
        });
      },
      open3() {
        this.$message({
          message: '警告哦，这是一条警告消息',
          type: 'warning'
        });
      },
      open4() {
        this.$message.error('错了哦，这是一条错误消息');
      }
    }
  })
</script>

Tabs Tab page

Separate data collections that are related in content but belong to different categories. 

<h3>基础的、简洁的标签页</h3>
<!--
	通过value属性来指定当前选中的标签页
-->
<el-tabs value="first">
  <el-tab-pane label="用户管理" name="first">用户管理</el-tab-pane>
  <el-tab-pane label="配置管理" name="second">配置管理</el-tab-pane>
  <el-tab-pane label="角色管理" name="third">角色管理</el-tab-pane>
  <el-tab-pane label="定时任务补偿" name="fourth">定时任务补偿</el-tab-pane>
</el-tabs>
<h3>选项卡样式的标签页</h3>
<el-tabs value="first" type="card">
  <el-tab-pane label="用户管理" name="first">用户管理</el-tab-pane>
  <el-tab-pane label="配置管理" name="second">配置管理</el-tab-pane>
  <el-tab-pane label="角色管理" name="third">角色管理</el-tab-pane>
  <el-tab-pane label="定时任务补偿" name="fourth">定时任务补偿</el-tab-pane>
</el-tabs>
<h3>卡片化的标签页</h3>
<el-tabs value="first" type="border-card">
  <el-tab-pane label="用户管理" name="first">用户管理</el-tab-pane>
  <el-tab-pane label="配置管理" name="second">配置管理</el-tab-pane>
  <el-tab-pane label="角色管理" name="third">角色管理</el-tab-pane>
  <el-tab-pane label="定时任务补偿" name="fourth">定时任务补偿</el-tab-pane>
</el-tabs>
<script>
  new Vue({
    el: '#app'
  })
</script>

Form Form

is composed of input boxes, selectors, radio buttons, multi-select boxes and other controls, and is used to collect, verify and submit data. In the Form component, each form field is composed of a Form-Item component. Various types of form controls can be placed in the form field, including Input, Select, Checkbox, Radio, Switch, DatePicker, and TimePicker. 

<!--
	rules：表单验证规则
-->
<el-form ref="form" :model="form" :rules="rules" label-width="80px">
  <!--
  	prop：表单域 model 字段，在使用 validate、resetFields 方法的情况下，该属性是必填的
  -->
  <el-form-item label="活动名称" prop="name">
    <el-input v-model="form.name"></el-input>
  </el-form-item>
  <el-form-item label="活动区域" prop="region">
    <el-select v-model="form.region" placeholder="请选择活动区域">
      <el-option label="区域一" value="shanghai"></el-option>
      <el-option label="区域二" value="beijing"></el-option>
    </el-select>
  </el-form-item>
  <el-form-item label="活动时间">
    <el-col :span="11">
      <el-date-picker type="date" placeholder="选择日期" v-model="form.date1" style="width: 100%;"></el-date-picker>
    </el-col>
    <el-col class="line" :span="2">-</el-col>
    <el-col :span="11">
      <el-time-picker type="fixed-time" placeholder="选择时间" v-model="form.date2" style="width: 100%;"></el-time-picker>
    </el-col>
  </el-form-item>
  <el-form-item label="即时配送">
    <el-switch v-model="form.delivery"></el-switch>
  </el-form-item>
  <el-form-item label="活动性质">
    <el-checkbox-group v-model="form.type">
      <el-checkbox label="美食/餐厅线上活动" name="type"></el-checkbox>
      <el-checkbox label="地推活动" name="type"></el-checkbox>
      <el-checkbox label="线下主题活动" name="type"></el-checkbox>
      <el-checkbox label="单纯品牌曝光" name="type"></el-checkbox>
    </el-checkbox-group>
  </el-form-item>
  <el-form-item label="特殊资源">
    <el-radio-group v-model="form.resource">
      <el-radio label="线上品牌商赞助"></el-radio>
      <el-radio label="线下场地免费"></el-radio>
    </el-radio-group>
  </el-form-item>
  <el-form-item label="活动形式">
    <el-input type="textarea" v-model="form.desc"></el-input>
  </el-form-item>
  <el-form-item>
    <el-button type="primary" @click="onSubmit">立即创建</el-button>
  </el-form-item>
</el-form>
<script>
  new Vue({
    el: '#app',
    data:{
      form: {
        name: '',
        region: '',
        date1: '',
        date2: '',
        delivery: false,
        type: [],
        resource: '',
        desc: ''
      },
      //定义校验规则
      rules: {
        name: [
          { required: true, message: '请输入活动名称', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        region: [
          { required: true, message: '请选择活动区域', trigger: 'change' }
        ]
      }
    },
    methods:{
      onSubmit() {
        console.log(this.form);
        //validate：对整个表单进行校验的方法，参数为一个回调函数。
        //该回调函数会在校验结束后被调用，并传入两个参数：是否校验成功和未通过校验的字段。
        this.$refs['form'].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      }
    }
  })
</script>

【Related recommendations: javascript video tutorial, vue.js tutorial】

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