vue三种常用获取input值方法

1. v-model 表单输入绑定

使用v-model创建双向数据绑定, 用来监听用户的输入事件以更新数据

<template>
    <div>
        <input class="login-input" type="text"  v-model="username" placeholder="请输入账号">
        <input class="login-input" type="password" v-model="password" placeholder="请输入密码">
		<div class="login-button" @click="login" type="submit">登陆</div>
    </div>
</template>
<script>
export default {
      name: 'Login',
       data() {
           return {
               username: '',
               password: ''
           }
       },
       methods: {
           login() {
                  console.log(this.username)
                  console.log(this.password)
           }
       }
   }
<script/>

2. @input 监听输入框

输入框只要输入的值变化了就会触发 input 调用 search 数据实时获取通过 event.currentTarget.value 获取到

<template>
  <div class="class">
    <div>
      <input type="text" @keyup.enter="search" @input="search($event)"/>
    </div>
  </div>
</template>
<script>
   export default {
     name: "search",
     data() {
     },
     methods: {
        search(event){
          console.log(event.currentTarget.value)
        }
     }
   }
</script>

3. ref 获取数据

类似于原生DOM,但是ref获取数据更方便

<template>
  <div class="class">
      <input type="text" ref="getValue" />
      <button @click="subbmitButton">获取表单数据</button>
  </div>
</template>
<script>
   export default {
     name: "page",
     data() {
     },
     methods: {
        subbmitButton(){
          console.log(this.$refs.getValue.value)
        }
     	}
   }
 </script>

4.使用elementplus框架+常用双向绑定实战,双向绑定可随时更新数据，且全局有效

<template>
  <div>
    <el-form :model="ruleForm" ref="ruleFormRef" size="default" label-position="left" label-width="110px" >
      <el-row :gutter="35">
        <el-col :xs="24" :sm="6" :md="6" :lg="6" :xl="6" class="mb20">
  		  <el-form-item label="编码" prop="code">
		    <el-input v-model="ruleForm.code" placeholder="编码" clearable/>
  		  </el-form-item>				
		</el-col>
        <el-col :xs="24" :sm="18" :md="18" :lg="18" :xl="18" class="mb20">
        </el-col>
      </el-row>
    </el-form>
    <el-button type="primary" @click="Aclick" size="default">点击获取input值</el-button>
  </div>
</template>
<script lang="ts" setup name="airInEditDialog">
  	import { ref,onMounted,reactive, } from "vue";
	import { ElMessageBox, ElMessage } from "element-plus";
  
  //自定义参数
  const ruleFormRef = ref();//表单响应式
  const ruleForm = ref<any>();//表单信息
  
  // 页面加载时执行的方法
  onMounted(async () => {
    //使用双向绑定v-model,赋值input框
    ruleForm.value.code = "ABCD";
  });
  //点击按钮获取input值
  const Aclick=()=>{
    //使用双向绑定v-model,获取input值
    ElMessage.success("input的值为："+ruleForm.value.code);
  };
 </script>