Throttle a JavaScript function
Create a throttled function that only invokes the provided function at most once per the specified interval.
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.
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JavaScript · How can I implement a sleep function in JavaScript?
Learn how you can implement a delay function using
setTimeout(), promises andasync/await. -
JavaScript · Run JavaScript promises in series
Learn how to resolve promises one after another (sequentially) in JavaScript.
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JavaScript · Negative index in JavaScript array
Ever wanted to use negative indices in JavaScript arrays? Here's a simple way to do it using a Proxy.
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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 · Implement the SDBM hash function in JavaScript
SDBM is a simple, non-cryptographic hash function that can hash strings into whole numbers. Here's a JavaScript implementation.
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JavaScript · Convert the output of a JavaScript generator to an array
Converts the output of any generator function to an array using the spread operator.
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JavaScript · Find matching keys in a JavaScript object
Find all the keys in a JavaScript object that match the given value.
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JavaScript · Refactoring your for...in loops to avoid ESLint warnings
ESLint is a really useful tool, but sometimes it gets in the way. Learn how to refactor code to get rid of a common warning.
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JavaScript · Change color lightness using JavaScript
Learn how to change the lightness component of an
hsl()color string using JavaScript. -
JavaScript · Where and how can I use the Boolean function in JavaScript?
JavaScript's Boolean function can be used for truth-checking data among other things. Learn how to use it and level up your code today.
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JavaScript · How can I split a JavaScript array into two groups?
Learn how to split a JavaScript array into two groups based on a function or an array of values.
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JavaScript · How can I add a timeout to a promise in JavaScript?
Oftentimes you might need to add a timeout to a promise in JavaScript. Learn how to do this and more in this short guide.
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JavaScript · Asynchronous function composition in JavaScript
Learn how to perform function composition for asynchronous functions.
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JavaScript · How do I compare two arrays in JavaScript?
Learn how you can compare two arrays in JavaScript using various different techniques.
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JavaScript · How can I add minutes, hours or days to a JavaScript date?
Learn how to manipulate
Dateobjects to add minutes, hours, days and more. -
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 · What are promises in JavaScript? In which states can a promise be?
JavaScript's promises represent the eventual completion (or failure) of asynchronous operations and their resulting value.
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JavaScript · Use JavaScript to listen and handle scroll stop events
Use some clever JavaScript tricks to listen for and handle scroll stop events in the browser.
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JavaScript · How can I save a JSON object to a file using JavaScript?
Learn how to write a JSON object to a file, both using Node.js and in the browser.
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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 · Invert the key-value pairs of a JavaScript object
Learn how to invert the key-value pairs of an object in JavaScript.
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JavaScript · Filter a JavaScript object's properties by keys or values
Learn how to transform objects by filtering their properties based on an array of keys or a predicate function.
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JavaScript · Calculate the factorial of a number using JavaScript
Calculate the factorial of a number, using two different approaches.