vue弹窗组件实现方法

基础弹窗组件实现

创建基础弹窗组件需要定义模板、样式和交互逻辑。以下是一个最简单的实现示例：

<template>
  <div class="modal-mask" v-show="visible" @click.self="close">
    <div class="modal-container">
      <slot></slot>
      <button @click="close">关闭</button>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    visible: {
      type: Boolean,
      default: false
    }
  },
  methods: {
    close() {
      this.$emit('update:visible', false)
    }
  }
}
</script>

<style>
.modal-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-container {
  background: white;
  padding: 20px;
  border-radius: 4px;
}
</style>

动态挂载实现

对于全局弹窗，可以使用动态挂载方式：

// Toast.vue
<template>
  <transition name="fade">
    <div v-if="show" class="toast">{{message}}</div>
  </transition>
</template>

<script>
export default {
  data() {
    return {
      show: false,
      message: ''
    }
  }
}
</script>

// 注册为插件
const Toast = {
  install(Vue) {
    const ToastConstructor = Vue.extend(ToastComponent)
    const instance = new ToastConstructor()
    instance.$mount(document.createElement('div'))
    document.body.appendChild(instance.$el)

    Vue.prototype.$toast = (msg) => {
      instance.message = msg
      instance.show = true
      setTimeout(() => {
        instance.show = false
      }, 2000)
    }
  }
}

动画过渡效果

为弹窗添加过渡动画可以提升用户体验：

<transition name="modal">
  <div class="modal" v-if="show">
    <div class="modal-content">
      <!-- 内容 -->
    </div>
  </div>
</transition>

<style>
.modal-enter-active, .modal-leave-active {
  transition: opacity 0.3s;
}
.modal-enter, .modal-leave-to {
  opacity: 0;
}
</style>

高级功能扩展

完整弹窗组件通常包含以下功能点：

<template>
  <div class="modal" v-show="visible">
    <div class="modal-header">
      <h3>{{title}}</h3>
      <button @click="close">&times;</button>
    </div>
    <div class="modal-body">
      <slot></slot>
    </div>
    <div class="modal-footer">
      <button @click="cancel">取消</button>
      <button @click="confirm">确定</button>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    visible: Boolean,
    title: String,
    showCancel: {
      type: Boolean,
      default: true
    }
  },
  methods: {
    close() {
      this.$emit('close')
    },
    cancel() {
      this.$emit('cancel')
    },
    confirm() {
      this.$emit('confirm')
    }
  }
}
</script>

组件调用方式

父组件中调用弹窗的几种常见模式：

<template>
  <button @click="showModal = true">打开弹窗</button>
  <MyModal v-model="showModal" @confirm="handleConfirm">
    <p>自定义内容</p>
  </MyModal>
</template>

<script>
import MyModal from './MyModal.vue'

export default {
  components: { MyModal },
  data() {
    return {
      showModal: false
    }
  },
  methods: {
    handleConfirm() {
      console.log('确认操作')
    }
  }
}
</script>

以上实现方式涵盖了从基础到进阶的弹窗组件开发要点，可根据实际需求选择适合的方案或进行组合使用。