Debounce in Vue.js: Controlling Function Execution

Debounce in Vue.js is used to delay the execution of a function for a specified period after a user action, such as typing, dragging, etc. This is commonly used to control the frequency of function calls and prevent excessive calls when a user interacts.

Here's a basic guide on how to use debounce in Vue.js:

Install the Lodash Library

First, you need to install the Lodash library to use the debounce function. Use the following command to install Lodash:

npm install lodash

Import and Use Debounce

In your Vue component, import the debounce function from Lodash and use it in situations where debounce is needed.

    <input type="text" v-model="searchTerm" @input="handleSearch" />
    <div>{{ searchResult }}</div>

import _ from 'lodash';

export default {
  data() {
    return {
      searchTerm: '',
      searchResult: ''
  methods: {
    handleSearch: _.debounce(function() {
      // Handle search here, for example:
      // Call search API and update searchResult
      this.searchResult = 'Search Result: ' + this.searchTerm;
    }, 300) // Debounce time (300ms)

In the example above, the handleSearch function will be delayed by 300ms after the user types into the search input. This helps avoid making excessive API calls while the user is typing quickly.

Note that debounce helps control the frequency of function calls, but it can also impact the user experience if the debounce time is set too high. Consider the appropriate debounce time for each use case.