javascript – Vue.js在从列表中更改所选元素时进行转换

我有一个配置文件列表,可以打开“编辑配置文件”屏幕.这个屏幕从左边滑入.当我选择一个配置文件时,如果已经选择了一个屏幕,我希望它首先滑出,更改所选的配置文件数据,然后滑入.

现在发生的事情是：当我第一次选择一个元素时,屏幕会滑入.当我更改所选元素时,屏幕会停留,不会滑出并重新进入.

这是一个gif来展示它现在的表现如何：

我的代码是：

Vue方法：

editProfile: function (index){
    // this.editingProfile = false;
    this.setProfile(index);
    this.editingProfile = true;

}

Html查看：

        <transition name="fade" mode="out-in">
            <div v-if="editingProfile" id="edit-profile">
                <input placeholder="Profile Name" v-model="synced.profiles[synced.selectedProfile].name">
            </div>
        </transition>

CSS：

.fade-enter-active, .fade-leave-active {
   transition: all .2s;
   /* transform:translateX(0); */
  }
  .fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */ {
    opacity: 0;
    transform:translateX(-100%);
  }

如何在更改配置文件时将其正确滑出然后再返回？

解决方法:

在代码中显示一个配置文件后,根本原因是v-if =“editingProfile”始终为true.

一个解决方案首先将其设置为false,然后将其设置为.$nextTick将其再次设置为true.但是你必须将this.editingProfile = true放在一个setTimeout中,延迟时间=转换时间.否则,幻灯片效果将被覆盖.

如下演示：

new Vue({
  el: '#emit-example-simple',
  data() {
    return {
      editingProfile: false,
      synced : {
        profiles: [{'name':'A'}, {'name':'B'}, {'name':'C'}],
        selectedProfile: 0
      },
    }
  },
  methods: {
    editProfile: function (index){
      this.editingProfile = !this.editingProfile
      this.$nextTick(() => {
        setTimeout(()=> {
        this.synced.selectedProfile = index
        this.editingProfile = true
        }, 1200)
      })
    }
  }
})

.fade-enter-active, .fade-leave-active {
   transition: all 1.2s;
   /* transform:translateX(0); */
  }
.fade-enter, .fade-leave-to /* .fade-leave-active below version 2.1.8 */ {
  opacity: 0;
  transform:translateX(-100%);
  border: 1px solid white;
}

<script src="https://unpkg.com/vue/dist/vue.js"></script>

<div id="emit-example-simple">
  <button @click="editProfile(0)">Profile 1</button>
  <button @click="editProfile(1)">Profile 2</button>
  <button @click="editProfile(2)">Profile 3</button>
  <transition name="fade" mode="out-in">
      <div v-if="editingProfile" id="edit-profile">
          <input style="border: 5px solid red;" placeholder="Profile Name" v-model="synced.profiles[synced.selectedProfile].name">
      </div>
  </transition>
</div>

或者您可以考虑使用如下简单演示的组转换：

new Vue({
  el: '#emit-example-simple',
  data() {
    return {
      editingProfile: false,
      profileContainers: [true, false],
      synced : {
        profiles: [{'name':'A'}, {'name':'B'}, {'name':'C'}],
        selectedProfile: 0
      },
    }
  },
  methods: {
    editProfile: function (index){
      this.synced.selectedProfile = index
      this.profileContainers = this.profileContainers.map((x)=>!x)
    }
  }
})

.list-items-enter-active {
 transition: all 1.2s;
}
.list-items-leave-active {
 transition: all 1.2s;
}
.list-items-enter, .list-items-leave-to /* .fade-leave-active below version 2.1.8 */ {
  opacity: 0;
  transform:translateX(-100%);
  border: 1px solid white;
}

.list-item {
  display: inline-block;
  border: 6px solid red;
}

<script src="https://unpkg.com/vue/dist/vue.js"></script>

<div id="emit-example-simple">
  <button @click="editProfile(0)">Profile 1</button>
  <button @click="editProfile(1)">Profile 2</button>
  <button @click="editProfile(2)">Profile 3</button>
  <transition-group name="list-items" tag="p">
    <div v-for="(item, index) in profileContainers" :key="index" v-if="item">
        <input style="border: 5px solid red;" placeholder="Profile Name" v-model="synced.profiles[synced.selectedProfile].name">
    </div>
  </transition-group>
</div>

标签：javascript,css-transitions,vue-js,vuejs2
来源： https://codeday.me/bug/20190607/1194305.html