Vue3学习之表单的使用示例详解

<div id="app">
    <p>input元素：</p>
    <input v-model="message" placeholder="改动一下我试试吧...">
    <p>{{ message }}</p>

    <p>textarea元素：</p>
    <textarea v-model="info" placeholder="改动一下我试试吧..."></textarea>
    <p>{{ info }}</p>
</div>

<script>
    const app = {
        data() {
            return {
                message: '',
                info: 'CSDN - dahezhiquan'
            }
        }
    }
    Vue.createApp(app).mount('#app')
</script>

<div id="app">
    <p>单个复选框：</p>
    <input type="checkbox" id="checkbox" v-model="checked">
    <label for="checkbox">{{ checked }}</label>

    <p>多个复选框：</p>
    <input type="checkbox" id="imustctf" value="Imustctf" v-model="checkedNames">
    <label for="imustctf">Imustctf</label>
    <input type="checkbox" id="google" value="Google" v-model="checkedNames">
    <label for="google">Google</label>
    <input type="checkbox" id="taobao" value="Taobao" v-model="checkedNames">
    <label for="taobao">taobao</label>
    <br>
    <span>选择的值为: {{ checkedNames }}</span>
</div>

<script>
    const app = {
        data() {
            return {
                checked: false,
                checkedNames: []
            }
        }
    }

    Vue.createApp(app).mount('#app')
</script>

<div id="app">
    <select v-model="selected">
        <option value="">选择一个网站</option>
        <option value="www.baidu.com">baidu</option>
        <option value="www.google.com">Google</option>
        <option value="www.sougou.com">sougou</option>
    </select>
    <div>
        选择的网站是: {{ selected }}
    </div>
</div>

<script>
    const app = {
        data() {
            return {
                selected: ''
            }
        }
    }

    Vue.createApp(app).mount('#app')
</script>

<!-- 在 "change" 而不是 "input" 事件中更新 -->
<input v-model.lazy="msg" >

<input v-model.number="age" type="number">

<input v-model.trim="msg">