vue2.0删除debounce及lodash中debounce和throttle的却别
2019/03/20    标签: vue Debounce    lodash debounce throttle   

vue2.0删除了debounce

官方文档:https://vuejs.org/v2/guide/migration.html#debounce-Param-Attribute-for-v-model-removed

建议实现方式

html

<!--
By using the debounce function from lodash or another dedicated
utility library, we know the specific debounce implementation we
use will be best-in-class - and we can use it ANYWHERE. Not only
in our template.
-->
<script src="https://cdn.jsdelivr.net/lodash/4.13.1/lodash.js"></script>
<div id="debounce-search-demo">
  <input v-model="searchQuery" placeholder="Type something">
  <strong>{{ searchIndicator }}</strong>
</div>

js

new Vue({
  el: '#debounce-search-demo',
  data: {
    searchQuery: '',
    searchQueryIsDirty: false,
    isCalculating: false
  },
  computed: {
    searchIndicator: function () {
      if (this.isCalculating) {
        return '⟳ Fetching new results'
      } else if (this.searchQueryIsDirty) {
        return '... Typing'
      } else {
        return '✓ Done'
      }
    }
  },
  watch: {
    searchQuery: function () {
      this.searchQueryIsDirty = true
      this.expensiveOperation()
    }
  },
  methods: {
    // This is where the debounce actually belongs.
    expensiveOperation: _.debounce(function () {
      this.isCalculating = true
      setTimeout(function () {
        this.isCalculating = false
        this.searchQueryIsDirty = false
      }.bind(this), 1000)
    }, 500)
  }
})

lodash中debounce和throttle的区别

在第一次触发的时候throttle会直接调用,并且每隔wait的时间都会调用一次,而debounce第一次不会调用,并且只有当触发的间隔时间大于wait时才会调用,否则一直不会调用

原文地址:https://www.cnblogs.com/wandiao/p/7223269.html


没有更多了