Convert between CSV and JavaScript arrays, objects or JSON
Serialize and deserialize CSV data in JavaScript with this in-depth guide.
JavaScript String 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.
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JavaScript · Formatting numeric values in JavaScript
Learn common number formatting operations, such as rounding, padding, optional decimal marks, currency, seconds, bytes, and more.
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JavaScript · Case conversion in JavaScript
A complete guide to case conversion in JavaScript, including camel case, kebab case, snake case, Pascal case, title case and sentence case.
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JavaScript · How do I convert an iterable to an array in JavaScript?
Learn how to use the JavaScript ES6 spread syntax to converting iterables to arrays and level up your code today.
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JavaScript · How do I use JavaScript to get the base URL or the URL parameters?
Master URL handling by learning how to get the base URL and the URL parameters as an object in JavaScript.
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JavaScript · Parse or serialize a cookie with JavaScript
Learn how to parse or serialize a cookie with JavaScript, quickly and effectively.
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JavaScript · How can I convert between hexadecimal, RGB, HSL and HSB color formats in JavaScript?
Learn how to easily convert between the various color formats, using JavaScript and a few simple formulas.
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JavaScript · Calculate all permutations of a JavaScript array or string
Generate all permutations of an array's elements or a string's characters using recursion.
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JavaScript · Split a JavaScript string into words
Learn how to split a string into words, using the
Intl.SegmenterAPI. -
JavaScript · Implement the Caesar cipher in JavaScript
The Caesar cipher is a simple substitution cipher, which can be easily implemented with a few lines of JavaScript code.
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JavaScript · Convert an RGB color string to a JavaScript array or object
Easily convert an
rgb()color string to an array of values or an object with the values of each color. -
JavaScript · Replace the last occurrence of a pattern in a JavaScript string
Learn how to use regular expressions to replace the last occurrence of a pattern in a JavaScript string.
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JavaScript · Convert an integer to a roman numeral in JavaScript
Roman numerals are often used for stylistic reasons, but converting an integer to a roman numeral can be a bit tricky.
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JavaScript · Convert an HSL color string to a JavaScript array or object
Easily convert an
hsl()color string to an array of values or an object with the values of each color. -
JavaScript · Change color lightness using JavaScript
Learn how to change the lightness component of an
hsl()color string using JavaScript. -
JavaScript · Swapcase a JavaScript string
Learn how to create a string with uppercase characters converted to lowercase and vice versa.
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JavaScript · Join the segments of a URL using JavaScript
Learn how to join the segments of a URL and normalize the resulting URL using JavaScript.
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JavaScript · How can I extend a 3-digit color code to a 6-digit color code in JavaScript?
Learn how to convert a 3-digit RGB notated hexadecimal color-code to the 6-digit form.
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JavaScript · Count the occurrences of a value in a JavaScript array or string
Given a value, find out how many times it appears in an array or string.
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JavaScript · Common regular expressions
A collection of regular expressions that can be used to solve common problems.
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JavaScript · Word wrap a JavaScrip string
Wrap a string to a given number of characters using a string break character in JavaScript.
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JavaScript · Find all indexes of a substring in a JavaScript string
Create a generator function that finds all the indexes of a substring in a given string.
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JavaScript · Apply a mapping function to each character in a JavaScript string
Learn how to replicate the behavior of
Array.prototype.map()for strings. -
JavaScript · Check if a JavaScript collection is empty
Quickly determine if a collection of values is empty in JavaScript.