【VUE】3.表单操作

1. Form组件渲染

  1. components -> 新增组件Form.vue

<template>
    <div>表单验证</div>
</template>

<script>
export default {
    
}
</script>

<style lang="less" scoped>

</style>

  2. 添加路由 router -> index.js

// 导入组件
import Form from '../components/Form.vue'

//增加新路由规则
const routes = [
  {
    path: '/',
    redirect: '/demo1'
  },
  {
    path: '/demo1',
    name: 'Demo1',
    component: Demo1
  },
  {
    path: '/form',
    name: 'Form',
    component: Form
  }
]

 

  3. npm run serve 访问http://localhost:8080/#/form

 

 2. 数据绑定

  1. 通过Element-UI布局  components ->  Form.vue

    用到的组件:el-form el-form-item el-input el-button

<template>
  <div class="form_container">
    <el-form label-width="100px">
      <el-form-item label="用户名">
        <el-input></el-input>
      </el-form-item>
      <el-form-item label="密码">
        <el-input></el-input>
      </el-form-item>
      <el-form-item class="btns">
        <el-button type="primary">校验</el-button>
        <el-button type="info">重置</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

  

  

  2.plugins -> element.js 

    按需导入Element-UI  组件

import Vue from 'vue'
import { Button, Form, Input, FormItem } from 'element-ui'

Vue.use(Button)
Vue.use(Form)
Vue.use(Input)
Vue.use(FormItem)

  

  3.数据绑定

   知识点:

    model:表单数据对象

    v-model:需要绑定的数据对象

<template>
  <div class="form_container">
    <el-form :model="Form" label-width="100px">
      <el-form-item label="用户名">
        <el-input v-model="Form.username"></el-input>
      </el-form-item>
      <el-form-item label="密码">
        <el-input v-model="Form.password"></el-input>
      </el-form-item>
      <el-form-item class="btns">
        <el-button type="primary">校验</el-button>
        <el-button type="info">重置</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

  4.到行为去增加数据对象

<script>
export default {
  data() {
    return {
      Form: {
        username: "",
        password: ""
      }
    };
  }
};
</script>

 

3.数据校验

  1. 增加校验规则 rules, prop:作用与el-form-item,表单域 model 字段,在使用 validate、resetFields 方法的情况下,该属性是必填的

<template>
  <div class="form_container">
    <el-form :model="Form" :rules="FormRules" label-width="100px">
      <el-form-item prop="username" label="用户名">
        <el-input v-model="Form.username"></el-input>
      </el-form-item>
      <el-form-item prop="password" label="密码">
        <el-input v-model="Form.password"></el-input>
      </el-form-item>
      <el-form-item class="btns">
        <el-button type="primary">校验</el-button>
        <el-button type="info">重置</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

  2. 增加FormRules的数据对象:required 必填项, message:提示, trigger: "blur" 鼠标选中

FormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" }
        ],
        password: [{ required: true, message: "请输入密码", trigger: "blur" }]
      }

  3. 检查效果

 

4. 重置表单

  1. resetField:对该表单项进行重置,将其值重置为初始值并移除校验结果

  2.对button绑定click事件

// tempalte
<el-button type="info" @click="resetForm">重置</el-button>

// 行为区新增重置方法
methods: {
    // 重置表单
    resetForm() {
      console.log(this);
    }
  }

  3.增加ref 引用

<el-form :model="Form" :rules="FormRules" ref="FormRef" label-width="100px">

 

  4. 重置方法

methods: {
    // 重置表单
    resetForm() {
      console.log(this);
      this.$refs.FormRef.resetFields()
    }
  }

  

  5.实现效果

 

5. 表单预验证

  1.validate: valid第一个为行参,返回布尔值,如果不通过False, 通过则是true

 // 预验证
    validForm() {
        this.$refs.FormRef.validate( valid => {
            console.log(valid)
        })
    }

  2. 实现效果

  

github: https://github.com/wangxiao9/vue_coding.git

参考:https://element.faas.ele.me/#/zh-CN/component/form

posted @ 2020-05-19 14:08  WANG-X  阅读(1636)  评论(0编辑  收藏  举报