javascript - Lodash : how to do a case insensitive sorting on a collection using orderBy?

Javascript - Lodash : how to do a case insensitive sorting on a collection using orderBy?

In Lodash, when you want to perform a case-insensitive sorting on a collection using orderBy, you can achieve this by providing a custom iteratee function that converts the values to a common case (lowercase or uppercase) before comparing them. Here's how you can do it:

Using Lodash orderBy with Custom Iteratee Function

Assume you have an array of objects that you want to sort based on a property in a case-insensitive manner:

const _ = require('lodash'); // Sample data let data = [ { id: 1, name: 'Alice' }, { id: 2, name: 'bob' }, { id: 3, name: 'Charlie' }, { id: 4, name: 'dave' } ]; // Sorting by name case-insensitively let sortedData = _.orderBy(data, [obj => obj.name.toLowerCase()], ['asc']); console.log(sortedData);

Explanation:

  1. Require Lodash: Make sure you have Lodash installed and required in your project (const _ = require('lodash');).

  2. Data Setup: Define your array of objects (data) with properties you want to sort.

  3. orderBy Function:

    • _.orderBy(collection, [iteratees], [orders]): This function sorts a collection (data in this case) by one or more properties (iteratees) in specified orders (orders).

  4. Custom Iteratee Function:

    • In this example, [obj => obj.name.toLowerCase()] is used as the iteratee. It converts each name property to lowercase before comparing for sorting. This ensures case insensitivity during sorting.

  5. Sorting Order:

    • 'asc' specifies ascending order. You can use 'desc' for descending order.

Alternative: Using Lodash sortBy for Case-Insensitive Sorting

Alternatively, you can achieve the same result using sortBy:

let sortedData = _.sortBy(data, [obj => obj.name.toLowerCase()]);

Conclusion

Using Lodash's orderBy or sortBy with a custom iteratee function allows you to perform case-insensitive sorting on collections effectively. This approach ensures that string comparisons during sorting are done in a consistent case, thus achieving the desired case-insensitive sorting behavior. Adjust the iteratee function (obj => obj.name.toLowerCase()) based on your specific sorting needs and the structure of your data.

Examples

  1. Lodash orderBy case insensitive

    • Description: This query addresses how to perform a case-insensitive sorting using Lodash's orderBy function.
    • Example Code:
      const data = [ { name: 'apple' }, { name: 'Orange' }, { name: 'banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  2. Lodash orderBy case insensitive example

    • Description: Provides an example demonstrating how to sort a collection case-insensitively using Lodash's orderBy.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  3. Lodash orderBy with case insensitive sorting

    • Description: Explains how to apply case-insensitive sorting to an array of objects using Lodash's orderBy function.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, ['name'], ['asc']);

  4. Lodash orderBy case insensitive string

    • Description: Discusses specific techniques for sorting strings in a case-insensitive manner using Lodash's orderBy.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  5. Lodash orderBy case insensitive attribute

    • Description: Covers how to sort an array of objects by a case-insensitive attribute using Lodash's orderBy.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  6. Lodash orderBy case insensitive comparator

    • Description: Explores using custom comparators to achieve case-insensitive sorting with Lodash's orderBy function.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  7. Lodash orderBy ignore case

    • Description: Describes methods to ignore case sensitivity when sorting data using Lodash's orderBy.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  8. Lodash orderBy case insensitive angular

    • Description: Addresses how to implement case-insensitive sorting using Lodash's orderBy within an Angular application.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  9. Lodash orderBy case insensitive array

    • Description: Provides solutions for sorting arrays case-insensitively using Lodash's orderBy function.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

  10. Lodash orderBy case insensitive example javascript

    • Description: Offers practical examples demonstrating how to achieve case-insensitive sorting in JavaScript using Lodash's orderBy.
    • Example Code:
      const data = [ { name: 'Apple' }, { name: 'orange' }, { name: 'Banana' } ]; const sortedData = _.orderBy(data, [item => item.name.toLowerCase()], ['asc']);

More Tags

youtube-api replace salesforce-lightning ternary-operator imap msysgit tcp docker-copy svc stdio

More Programming Questions

More Internet Calculators

More Organic chemistry Calculators

More Bio laboratory Calculators

More Entertainment Anecdotes Calculators