Apabila membuat senarai todolist, klik butang untuk memaparkan senarai todolist yang belum selesai.
Tetapi nilai indeks boleh diperolehi dengan melintasi item dalam tatasusunan, tetapi css tidak boleh diubah

<template>
  <p id="app" >
    <h1>{{title}}</h1>
    <input v-model='newItem' placeholder='Add your todolist' class='inputItem' v-on:keyup.enter='addNew'>
    <p class="nav">
      <img src="./assets/all.png">
      <img src="./assets/checkBox.png" @click='showUndo(item)'>
      <img src="./assets/checkBoxF.png" @click='showDone(item)'>
      <img src="./assets/delete.png" @click='deleteAll(item)'>
    </p>
    <ul>
      <li v-for='(item,index) in items' :index="index" class='todo-line'  >
        <p class='view'  @mouseenter='itemEnter(item)' @mouseleave='itemLeave(item)'>
          <span class="checkBox" 
          v-on:click='toggleFinish(item)' v-bind:class='{checked:item.isFinish}'></span>
          <label class='item-label' v-bind:class='{finished:item.isFinish}'>{{ index + 1}} . {{item.label}}</label>
          <img class="item-delete" src="./assets/delete1.png"  v-if='item.showDelete'  @click='deleteTodo(item)' >
        </p>        
      </li>
    </ul>
  </p>
</template>

<script>
import Store from './store'
export default {
  data: function () {
    return {
      item :'',
      title: 'todolist',  
      items: Store.fetch(),
      newItem: ''
    }
  },
   watch: {
    items: {
        handler: function (items) {
        Store.save(items)
      },
      deep: true
    }
  },
  methods: {
      toggleFinish(item) {
      item.isFinish = !item.isFinish
    },
    addNew: function () {
      this.items.push({
        label: this.newItem,
        isFinish: false,
        showDelete:false,
      })
      this.newItem = ''
    },
    itemEnter(item){
      item.showDelete = true
    },
    itemLeave(item){
      item.showDelete = false
    },
    deleteTodo(index){     
      this.items.splice(index,1)
    },
    deleteAll(item){
      this.items.splice(item)
    },
    showUndo(){
      var todo = this.items;
      for (var i = 0;i < todo.length; i++) {
        if (todo[i].isFinish == true) {
          todo[i].css('display', 'none');
          console.log(i)
        }
      }   
    },
  }
}
</script>

Maaf, apa yang silap? ?Ikhlas meminta pertolongan