How to use anti-shake in vue

Using anti-shake technology in Vue can effectively reduce the number of client requests and improve page performance and user experience. Anti-shake technology means that after the same event is triggered multiple times within a period of time, only the last triggered event will be executed, while previously unexecuted events will be ignored.

The anti-shake technology in Vue can be implemented through JS functions. Let us take a look at how to implement anti-shake technology in Vue.

1. Introducing the anti-shake function in the Vue instance

The anti-shake function can be used in the Vue instance to delay triggering events. The way to introduce the anti-shake function in the Vue instance is as follows:

import debounce from 'lodash/debounce';
export default {
  // ...
  methods: {
    handler: debounce(function () {
      // 处理事件
    }, 500)
  }
}

In the method of using anti-shake technology, we need to pass in the function that needs to be delayed and the time that needs to be delayed. The 500 here means a delay of 500 Trigger event in milliseconds.

2. Using the anti-shake function in the template

The method of using the anti-shake function in the template is similar to introducing the anti-shake function in the Vue instance. You only need to add the anti-shake function Just define it in the template.

<template>
  <div>
    <input type="text" v-model="search" @keyup="handler">
  </div>
</template>

<script>
import debounce from 'lodash/debounce';
export default {
  data() {
    return {
      search: ''
    }
  },
  methods: {
    handler: debounce(function () {
      console.log('处理事件')
    }, 500)
  }
}
</script>

In the template, we need to add an anti-shake function to the event that requires anti-shake technology. @keyup here means adding an anti-shake function to the keyup event.

3. Customized anti-shake function

You can also customize the anti-shake function through Vue's mixin.

import debounce from 'lodash/debounce';
export default {
  created() {
    this.$debounce = function (fn, wait) {
      return debounce(fn, wait);
    };
  }
}

Here, we define a function called $debounce through the mixin of the Vue instance. The usage is similar to the method of introducing the anti-shake function before. When using it, we can directly call the $debounce function.

<template>
  <div>
    <input type="text" v-model="search" @keyup="$debounce(handler, 500)">
  </div>
</template>

<script>
export default {
  data() {
    return {
      search: ''
    }
  },
  methods: {
    handler() {
      console.log('处理事件')
    }
  }
}
</script>

In the template, we can directly call the $debounce function, which will automatically perform anti-shake operations.

Summary:

The use of anti-shake technology in Vue is very simple. You only need to introduce the anti-shake function, and then add the anti-shake function to the events that need to be used. Using anti-shake technology can effectively reduce the number of client requests and improve page performance and user experience.

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