:disabled 表单按钮在 Vue 3 中不起作用答案

【问题标题】：:disabled Form button not working in Vue 3:disabled 表单按钮在 Vue 3 中不起作用
【发布时间】：2021-03-20 13:16:39
【问题描述】：

我正在尝试使用状态来禁用和启用表单按钮切换。如果我勾选复选框， :disable 将变为 true 并且可以使用按钮。但似乎在 Vue 3 中不起作用？

代码如下：

<template lang="pug">
.container
  .row
    .col-lg-12.desktop-sign-up
      .row.no-gutters
        .col-lg-6
          .image-container
            img.logo-container(src=".././assets/images/logo.png")
        .col-lg-6
          form.sign-in-form
            img.sign-in-image(src=".././assets/images/logo.png")
            .sign-in-header
              h1 Hello
            .sign-in-content
              h4 Please create <br/>an account to continue.
              .form-group
                input.form-control(placeholder="Username" type="text" v-model="user.username")
              .form-group
                input.form-control(placeholder="Email Address" type="email" v-model.lazy="user.email")
              .form-group(style="margin-bottom: 0;")
                input.form-control(placeholder="Password" type="password" v-model="user.password")
              .form-check
                input.form-check-input(id="customeCheck1" type="checkbox" v-model="user.isTncChecked")
                label.form-check-label(for="customCheck1") I agree with our 
                  router-link(:to="'/'" target="_blank") Terms 
                  | and 
                  router-link(:to="'/'" target="_blank") Conditions
                  | .
              .error-msg
                p(v-for="item in errorMsg" :class="{ success : isSuccess }" ) {{ item.msg }}
              .cta-conainer
                a.cta.cta-submit(href="" @click.prevent="handleSubmit" :disabled="isDisabled") Sign up
              .sign-in-msg
                p Already have an account.
                  a(href="#") Sign in here
</template>
<script>
import axios from 'axios'
export default {
  name: 'Register',
  components: {
  },
  directives: {
  },
  data() {
    return {
      user: {
        username: '',
        email: '',
        first_name:'',
        last_name:'',
        password: '',
        tracks: [],
        dateCreated: '',
        profile_pic: '',
        isTncChecked: false
      }
    }
  },
  beforeCreate() {
  },
  mounted () {
  },
  computed: {
    isDisabled () {
      return !this.user.isTncChecked
    }
  },
  methods: {}
}
</script>

它适用于 Vue 2。找不到有关 vue 3 重大更改如何影响这一点的任何信息。希望任何人都可以帮助我理解这一点。

谢谢

【问题讨论】：

标签： javascript html forms vue.js vuejs3

【解决方案1】：

<a> 标签没有disabled 属性，请改用<button>。

button.cta.cta-submit(@click.prevent="handleSubmit" :disabled="isDisabled") Sign up

或者使用CSS改变<a>的样式：

a.disabled {
  pointer-events: none;
  cursor: default;
}

或者你可以检查isDisabled里面的handleSubmit：

handleSubmit() {
  if (!this.isDisabled) {
  
  }
}

【讨论】：