vue3学习基础之表单相关

表单相关

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

const message = ref("hello");
const checked = ref();
const checkedNames = ref([]);
const picked = ref();
const selected = ref();
const mulSelected = ref([]);

const num = ref(5);
const name = ref("John");
const msg = ref("hello");
</script>
<template>
  <div>
    <el-row :gutter="5">
      <el-col :span="12">
        <el-card class="box-card">
          <template #header>
            <div class="card-header">
              <span>文本</span>
            </div>
          </template>
          <div>
            <p>Message is: {{ message }}</p>
            <p><input v-model="message" placeholder="edit me" /></p>
          </div>
        </el-card>
      </el-col>
      <el-col :span="12">
        <el-card class="box-card">
          <template #header>
            <div class="card-header">
              <span>多行文本</span>
            </div>
          </template>
          <div>
            <p>Message is: {{ message }}</p>
            <p>
              <textarea
                v-model="message"
                placeholder="add multiple lines"
              ></textarea>
            </p>
          </div>
        </el-card>
      </el-col>
    </el-row>

    <el-row :gutter="5">
      <el-col :span="12">
        <el-card class="box-card">
          <template #header>
            <div class="card-header">
              <span>复选框</span>
            </div>
          </template>
          <div>
            <p>是否同意: {{ checked }}</p>
            <p>
              <input
                type="checkbox"
                id="checkbox"
                v-model="checked"
                true-value="yes"
                false-value="no"
              />
              <label for="checkbox">同意</label>
            </p>
            <p>Checked names: {{ checkedNames }}</p>
            <p>
              <input
                type="checkbox"
                id="jack"
                value="Jack"
                v-model="checkedNames"
              />
              <label for="jack">Jack</label>
              <input
                type="checkbox"
                id="john"
                value="John"
                v-model="checkedNames"
              />
              <label for="john">John</label>
              <input
                type="checkbox"
                id="mike"
                value="Mike"
                v-model="checkedNames"
              />
              <label for="mike">Mike</label>
            </p>
          </div>
        </el-card>
      </el-col>
      <el-col :span="12">
        <el-card class="box-card">
          <template #header>
            <div class="card-header">
              <span>单选按钮</span>
            </div>
          </template>
          <div>
            <p>Picked: {{ picked }}</p>
            <p>
              <input type="radio" id="one" value="One" v-model="picked" />
              <label for="one">One</label>
              <input type="radio" id="two" value="Two" v-model="picked" />
              <label for="two">Two</label>
            </p>
          </div>
        </el-card>
      </el-col>
    </el-row>

    <el-row :gutter="5">
      <el-col :span="12">
        <el-card class="box-card">
          <template #header>
            <div class="card-header">
              <span>选择器</span>
            </div>
          </template>
          <div>
            <p>Selected: {{ selected }}</p>
            <p>
              <select v-model="selected">
                <option disabled value="">Please select one</option>
                <option>A</option>
                <option>B</option>
                <option>C</option>
              </select>
            </p>
            <p>Selected: {{ mulSelected }}</p>
            <p>
              <select v-model="mulSelected" multiple>
                <option>A</option>
                <option>B</option>
                <option>C</option>
              </select>
            </p>
          </div>
        </el-card>
      </el-col>
      <el-col :span="12">
        <el-card class="box-card">
          <template #header>
            <div class="card-header">
              <span>修饰符</span>
            </div>
          </template>
          <div>
            <p>
              <span>{{ msg }}</span>
              <br />
              <input v-model.lazy="msg" />.lazy 在 "change" 事件后同步更新而不是
              "input"
            </p>
            <p>
              <span>{{ num }}</span>
              <br />
              <input v-model.number="num" />.number
              用户输入自动转换为数字，如果该值无法被 parseFloat()
              处理，那么将返回原始值。
            </p>
            <p>
              <span>{{ name }}</span>
              <br />
              <input v-model.trim="name" />.trim自动去除用户输入内容中两端的空格
            </p>
          </div>
        </el-card>
      </el-col>
    </el-row>
  </div>
</template>
<style scoped>
.el-row {
  margin-top: 0.5rem;
}
</style>