vue2/benchmarks/reorder-list/index.html

<script src="https://cdn.jsdelivr.net/lodash/4.10.0/lodash.min.js"></script>
<script src="../../dist/vue.min.js"></script>
<style>
.danger {
  background-color: red;
}
</style>

<script type="text/x-template" id="t">
  <div>
    <h1>{{ total }} Components</h1>
    <p>{{ action }} took {{time}}ms.</p>
    <button @click="shuffle">shuffle</button>
    <button @click="add">add</button>
    <table class="table table-hover table-striped test-data">
      <row v-for="item in items" track-by="id"
        :class="{ danger: item.id === selected }"
        :item="item"
        @select="select(item)"
        @remove="remove(item)">
      </row>
    </table>
  </div>
</script>

<script type="text/x-template" id="row">
  <tr>
    <td class="col-md-1">{{item.id}}</td>
    <td class="col-md-4">
        <a @click="$emit('select')">{{item.label}}</a>
    </td>
    <td class="col-md-1">
      <button @click="$emit('remove')">remove</button>
    </td>
  </tr>
</script>

<div id="el">
</div>

<script>
var total = 1000
var items = []
for (var i = 0; i < total; i++) {
  items.push({
    id: i,
    label: String(Math.random()).slice(0, 5)
  })
}

var s = window.performance.now()
console.profile('render')
var vm = new Vue({
  el: '#el',
  template: '#t',
  data: {
    total: total,
    time: 0,
    action: 'Render',
    items: items,
    selected: null
  },
  methods: {
    shuffle: monitor('shuffle', function () {
      this.items = _.shuffle(this.items)
    }),
    add: monitor('add', function () {
      this.items.push({
        id: total++,
        label: String(Math.random()).slice(0, 5)
      })
    }),
    select: monitor('select', function (item) {
      this.selected = item.id
    }),
    remove: monitor('remove', function (item) {
      this.items.splice(this.items.indexOf(item), 1)
    })
  },
  components: {
    row: {
      props: ['item'],
      template: '#row'
    }
  }
})
setTimeout(function () {
  vm.time = window.performance.now() - s
  console.profileEnd('render')
}, 0)

function monitor (action, fn) {
  return function () {
    var s = window.performance.now()
    fn.apply(this, arguments)
    Vue.nextTick(function () {
      vm.action = action
      vm.time = window.performance.now() - s
    })
  }
}
</script>