Check if a number is inside a given range with JavaScript
Check if the given number falls within the specified numeric range.
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 · Get the nth element of a JavaScript array
Find the nth or every nth element of a JavaScript array.
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JavaScript · Normalize line endings in a JavaScript string
Having trouble with inconsistent line endings in your strings? Normalize them with this handy JavaScript function!
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JavaScript · How to encode and decode strings with Base64 in JavaScript
Encode and decode strings with Base64 in JavaScript easily with these code snippets.
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JavaScript · Element at a specific point on the page
Using
Document.elementFromPoint()to easily get the element at a specific point on the page. -
JavaScript · Edit URL Parameters in JavaScript
Avoid the naive approach and use a more robust method to edit URL parameters in JavaScript.
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JavaScript · What is the difference between cookies, local storage, and session storage?
Learn the difference between cookies, local storage and session storage and start using the correct option for your needs.
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JavaScript · How to construct a URL in JavaScript
A short guide on how to correctly construct a URL in JavaScript.
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JavaScript · Code Anatomy - Optimizing recursive functions
Recursive code tends to be inefficient or in need of optimization. Learn a couple of tricks we use to speed up our recursive functions.
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JavaScript · Avoid "javascript:void(0)" for empty links
There are many ways to create empty links, some more appropriate than others. Learn how to best handle empty links with this quick tip.
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JavaScript · What is the ternary operator and how do I use it?
Learn everything you need to know about the conditional (ternary) operator and how to use it in JavaScript.
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JavaScript · Get elements from the start or end of a JavaScript array by condition
Learn how to get elements from the start or end of a JavaScript array by condition, using
Array.prototype.slice(). -
JavaScript · Strip HTML tags using JavaScript
Use a regular expression to remove HTML/XML tags from a string.
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JavaScript · How can I check if a string starts or ends with a substring of another string using JavaScript?
Test if a string's start or end partially matches another string.
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JavaScript · Smooth scroll to the top of the page using JavaScript
Smooth-scrolls to the top of the page.
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JavaScript · Remove non ASCII characters from a JavaScript string
Remove non-printable ASCII characters from a string in JavaScript.
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JavaScript · Generate a JavaScript array of random integers in a given range
Combining
Math.random()and a few simple math operations, you can generate an array of random integers in a specified range. -
JavaScript · What is a pure function?
Pure functions are a very important concept to know, especially if you're interested in functional programming.
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JavaScript · Pretty print number of bytes
Convert a number in bytes to a human-readable string.
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JavaScript · HTML element class manipulation with JavaScript
Learn how to work with HTML element classes in JavaScript, from simple class checks to adding, removing and toggling classes.
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JavaScript · An introduction to functional programming
A short introduction to the functional programming paradigm.
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JavaScript · Check, compact or remove whitespaces in a JavaScript string
Learn how to work with whitespaces in JavaScript strings, using these simple yet powerful regular expression techniques.
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JavaScript · Optimize dynamically added object properties
Dynamically adding object properties can be pretty slow in some cases. Here's how to optimize it.
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JavaScript · Find the number of days in a month using JavaScript
Calculate the number of days in a month for a given year using JavaScript.