概述

使用v-model绑定单选框也比较常见,比如性别,要么是男,要么是女。比如单选题,给出多个选择,但是只能选择其中的一个。

在本节课中,我们演示一下这两种常见的用法。

基本用法

我们创建src/components/Demo15.vue,在这个组件中,我们要:

  • 1:定义answer响应式变量表示答案
  • 2:定义gender变量表示性别
  • 3:定义一组单选框,用于选择性别
  • 4:定义一组单选框,用于选择答案
  • 5:使用两个h3标签,一个用来显示性别,一个用来显示答案

代码如下:

<script setup>
import {ref} from "vue";

const answer = ref("A")
const gender = ref("男")

</script>
<template>
  <div>
    <h3>性别:{{ gender }}</h3>
    <h3>答案:{{ answer }}</h3>
  </div>

  <div>
    <h3>请选择性别</h3>
    <input type="radio" v-model="gender" value=""><input type="radio" v-model="gender" value=""></div>

  <div>
    <h3>请选择答案</h3>
    <input type="radio" v-model="answer" value="A"> A
    <input type="radio" v-model="answer" value="B"> B
    <input type="radio" v-model="answer" value="C"> C
    <input type="radio" v-model="answer" value="D"> D
  </div>
</template>

接着,我们修改src/App.vue,引入Demo15.vue并进行渲染:

<script setup>
import Demo from "./components/Demo15.vue"
</script>
<template>
  <h1>欢迎跟着Python私教一起学习Vue3入门课程</h1>
  <hr>
  <Demo/>
</template>

然后,我们浏览器访问:http://localhost:5173/

在这里插入图片描述

完整代码

package.json

{
  "name": "hello",
  "private": true,
  "version": "0.1.0",
  "type": "module",
  "scripts": {
    "dev": "vite",
    "build": "vite build"
  },
  "dependencies": {
    "vue": "^3.3.8"
  },
  "devDependencies": {
    "@vitejs/plugin-vue": "^4.5.0",
    "vite": "^5.0.0"
  }
}

vite.config.js

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'

export default defineConfig({
  plugins: [vue()],
})

index.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Vite + Vue</title>
  </head>
  <body>
    <div id="app"></div>
    <script type="module" src="/src/main.js"></script>
  </body>
</html>

src/main.js

import { createApp } from 'vue'
import App from './App.vue'

createApp(App).mount('#app')

src/App.vue

<script setup>
import Demo from "./components/Demo15.vue"
</script>
<template>
  <h1>欢迎跟着Python私教一起学习Vue3入门课程</h1>
  <hr>
  <Demo/>
</template>

src/components/Demo15.vue

<script setup>
import {ref} from "vue";

const answer = ref("A")
const gender = ref("男")

</script>
<template>
  <div>
    <h3>性别:{{ gender }}</h3>
    <h3>答案:{{ answer }}</h3>
  </div>

  <div>
    <h3>请选择性别</h3>
    <input type="radio" v-model="gender" value=""><input type="radio" v-model="gender" value=""></div>

  <div>
    <h3>请选择答案</h3>
    <input type="radio" v-model="answer" value="A"> A
    <input type="radio" v-model="answer" value="B"> B
    <input type="radio" v-model="answer" value="C"> C
    <input type="radio" v-model="answer" value="D"> D
  </div>
</template>

启动方式

yarn
yarn dev

浏览器访问:http://localhost:5173/

Logo

前往低代码交流专区

更多推荐