Common methods for implementing data filtering and search functions in Vue

Preface

In Vue applications, data filtering and search are common needs. This article will introduce how to implement data filtering and search functions in Vue, including filtering and search based on native JavaScript, filtering and search based on Lodash library, and filtering and search based on Vue plug-in.

Data filtering and search based on native JavaScript

JavaScript provides some native array methods, which can facilitate filtering and searching of arrays. Here are some commonly used methods.

filter() method

filter()Methods can be used to filter elements in an array that meet the conditions and return a new array. For example:

const numbers = [1, 2, 3, 4, 5];
const evenNumbers = (number => number % 2 === 0);
(evenNumbers); // [2, 4]

find() method

find()Methods can be used to search for the first element in an array that meets the condition and return that element. For example:

const users = [
  { id: 1, name: 'Alice' },
  { id: 2, name: 'Bob' },
  { id: 3, name: 'Charlie' },
  { id: 4, name: 'David' },
];

const user = (user =>  === 'Charlie');
(user); // { id: 3, name: 'Charlie' }

include() method

includes()Methods can be used to determine whether an element is contained in an array. For example:

const numbers = [1, 2, 3, 4, 5];
const hasThree = (3);
(hasThree); // true

indexOf() method

indexOf()Methods can be used to search for the location of an element in an array. For example:

const numbers = [1, 2, 3, 4, 5];
const index = (3);
(index); // 2

Data filtering and search based on Lodash library

Lodash is an excellent JavaScript tool library that provides a wealth of functions and methods to easily process data. The following are some commonly used functions and methods in the Lodash library.

filter() function

filter()Functions can be used to filter elements in an array that meet the conditions and return a new array. For example:

const numbers = [1, 2, 3, 4, 5];
const evenNumbers = _.filter(numbers, number => number % 2 === 0);
(evenNumbers); // [2, 4]

find() function

find()Functions can be used to search for the first element in an array that satisfies a condition and return that element. For example:

const users = [
  { id: 1, name: 'Alice' },
  { id: 2, name: 'Bob' },
  { id: 3, name: 'Charlie' },
  { id: 4, name: 'David' },
];

const user = _.find(users, user =>  === 'Charlie');
(user); // { id: 3, name: 'Charlie' }

include() function

includes()Functions can be used to determine whether an element is contained in an array. For example:

const numbers = [1, 2, 3, 4, 5];
const hasThree = _.includes(numbers, 3);
(hasThree); // true

indexOf() function

indexOf()Functions can be used to search for the location of an element in an array. For example:

const numbers = [1, 2, 3, 4, 5];
const index = _.indexOf(numbers, 3);
(index); // 2

orderBy() function

orderBy()Functions can be used to sort arrays by specified properties. For example:

const users = [
  { id: 1, name: 'Alice', age: 30 },
  { id: 2, name: 'Bob', age: 25 },
  { id: 3, name: 'Charlie', age: 35 },
  { id: 4, name: 'David', age: 20 },
];

const sortedUsers = _.orderBy(users, ['age'], ['desc']);
(sortedUsers);
/*
[
  { id: 3, name: 'Charlie', age: 35 },
  { id: 1, name: 'Alice', age: 30 },
  { id: 2, name: 'Bob', age: 25 },
  { id: 4, name: 'David', age: 20 }
]
*/

Data filtering and search based on Vue plug-in

In addition to using native JavaScript and Lodash libraries, you can also use Vue plug-in to implement data filtering and search functions. Here are some commonly used Vue plugins.

Vue-Filter-Plugin

Vue-Filter-Plugin is a Vue plug-in that provides some commonly used data processing functions, including filtering, searching, sorting, etc. It can be installed through npm, and the usage method is as follows:

import Vue from 'vue';
import VueFilterPlugin from 'vue-filter-plugin';

(VueFilterPlugin);

const numbers = [1, 2, 3, 4, 5];
const evenNumbers = ('filter')(numbers, number => number % 2 === 0);
(evenNumbers); // [2, 4]

Vue-Tables-2

Vue-Tables-2 is a table plug-in based on it, providing rich table functions, including filtering, searching, sorting, pagination, etc. It can be installed through npm, and the usage method is as follows:

import Vue from 'vue';
import VueTables from 'vue-tables-2';

(VueTables);

const users = [
  { id: 1, name: 'Alice', age: 30 },
  { id: 2, name: 'Bob', age: 25 },
  { id: 3, name: 'Charlie', age: 35 },
  { id: 4, name: 'David', age: 20 },
];

const options = {
  columns: ['id', 'name', 'age'],
  filterByColumn: true,
  sortable: ['age'],
  filterable: ['name'],
};

new Vue({
  el: '#app',
  data: {
    users,
    options,
  },
  template: `
    <div>
      <vue-tables :data="users" :options="options"></vue-tables>
    </div>
  `,
});

Conclusion

This article introduces the implementation of data filtering and search functions in Vue, including native JavaScript-based methods, Lodash library-based methods, and Vue plug-in-based methods. Choosing a method that suits you can improve development efficiency and accelerate project development progress.

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