vue中动画的封装

<style>
  .v-enter,.v-leave-to{
    opacity: 0;
  }
  .v-enter-active,.v-leave-active{
    transition:opacity 1s;
  }
</style>

<div id='app'>   <transition>     <div v-if='show'>hello world</div>   </transition>   <button @click='handleClick'>切换</button> </div> <script> var vm = new Vue({   el:'#app',   data:{     show:true   },   methods:{     handleClick:function(){       this.show = !this.show;     }   } }) </script>
有时候这种渐隐渐现的效果用的比较多,要复用,需要封装一下,怎么封装呢
<style>
  .v-enter,.v-leave-to{
    opacity: 0;
  }
  .v-enter-active,.v-leave-active{
    transition:opacity 1s;
  }
</style>

<div id='app'>   <fade :show='show'>     <div>hello world</div>   </fade>   <fade :show='show'>     <h1>hello world</h1>   </fade>   <button @click='handleClick'>切换</button> </div> <script> Vue.component('fade',{   props:['show'],   template: `     <transition>       <slot v-if='show'></slot>     </transition>   ` }) var vm = new Vue({   el:'#app',   data:{     show:false   },   methods:{     handleClick:function(){       this.show = !this.show;     }   } }) </script>
可以这样封装,将dom元素传入slot,除了这样,还可以样式一起封装进去
<div id='app'>
  <fade :show='show'>
    <div>hello world</div>
  </fade>
  <fade :show='show'>
    <h1>hello world</h1>
  </fade>
  <button @click='handleClick'>切换</button>
</div>

<script>
Vue.component('fade',{
  props:['show'],
  template: `
    <transition @before-enter='handleBeforeEnter' @enter='handleEnter'>
      <slot v-if='show'></slot>
    </transition>
  `,
  methods:{
    handleBeforeEnter:function(el){
      el.style.color='red'
    },
    handleEnter:function(el,done){
      setTimeout(()=>{
        el.style.color='green';
        done();
      },2000)
    }
  }
})
var vm = new Vue({
  el:'#app',
  data:{
    show:false
  },
  methods:{
    handleClick:function(){
      this.show = !this.show;
    }
  }
})
</script>
把样式一起封装进来,是比较推荐的方式

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转载自www.cnblogs.com/wzndkj/p/9704698.html