JavaScript Snippets

The JavaScript snippet collection contains a wide variety of ES6 helper functions. It includes helpers for dealing with primitives, arrays and objects, as well as algorithms, DOM manipulation functions and Node.js utilities.

  • What are the differences between Maps and objects in JavaScript?

    JavaScript, Object

    Maps and objects are very similar, but they have some differences that can help you decide which one better fits your use-case.

  • CSV to JSON

    JavaScript, String

    Converts a comma-separated values (CSV) string to a 2D array of objects. The first row of the string is used as the title row.

  • Calculate SHA-256 hash (browser)

    JavaScript, Browser

    Creates a hash for a value using the SHA-256 algorithm. Returns a promise.

  • JSON to CSV

    JavaScript, Array

    Converts an array of objects to a comma-separated values (CSV) string that contains only the columns specified.

  • Luhn check

    JavaScript, Math

    Implements the Luhn Algorithm, used to validate a variety of identification numbers.

  • 8 tips for accessible websites

    JavaScript, Accessibility

    Accessibility (a11y) can improve your website and attract new users. Learn how to get started with these 8 quick tips.

  • How do I use JavaScript to modify the URL without reloading the page?

    JavaScript, Browser

    Learn all of the options JavaScript provides for modifying the URL of the current page in the browser without reloading the page.

  • How do I compare two objects in JavaScript?

    JavaScript, Object

    Learn how you can compare two objects in JavaScript using various different techniques.

  • What is a callback function?

    JavaScript, Function

    JavaScript uses callback functions in various places for different purposes. From event listeners to asynchronous operations, they are an invaluable tool you need to master.

  • Compact object

    JavaScript, Object

    Deeply removes all falsy values from an object or array.

  • Heap sort

    JavaScript, Algorithm

    Sorts an array of numbers, using the heapsort algorithm.

  • Query string to object

    JavaScript, Object

    Generates an object from the given query string or URL.

  • Rename object keys

    JavaScript, Object

    Replaces the names of multiple object keys with the values provided.

  • HSL to object

    JavaScript, String

    Converts an hsl() color string to an object with the values of each color.

  • RGB to object

    JavaScript, String

    Converts an rgb() color string to an object with the values of each color.

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