How can I build an undirected tree from an array of edges in JavaScript?
Learn how to build an undirected tree from an array of edges in JavaScript, with various approaches for storing node relationships.
JavaScript Articles
The JavaScript article 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 · JavaScript function methods - call(), apply() and bind()
Learn everything you need to know about JavaScript's
call(),apply()andbind()in this short guide. -
JavaScript · JavaScript Data Structures - Binary Search Tree
A binary search tree is a hierarchical data structure of ordered nodes with at most two children each.
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JavaScript · Boolean traps and how to avoid them
Boolean traps can cause readability and maintainability issues in your code. Learn what they are, how to spot and fix them in this article.
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JavaScript · Show or hide HTML elements with JavaScript
Ever wanted to show or hide one or more elements in HTML, using JavaScript? Turns out it's very easy to do so.
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JavaScript · Introduction to the Node.js test module
The Node.js test module is a new testing tool that's still in its early stages. Learn more about it in this short introduction.
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JavaScript · Understanding higher-order functions in JavaScript
Learn everything you need to know about higher-order functions with this short guide and level up your programming skills.
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JavaScript · Get elements wider than the viewport with JavaScript
Ever had elements that horizontally overflow the viewport? This JavaScript function can help you identify them.
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JavaScript · Best Time to Buy and Sell Stock JavaScript Solution
Have you tried solving "Best Time to Buy and Sell Stock" on LeetCode? Let's take a couple of approaches to tackle it in JavaScript.
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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 · Add or remove an event listener in JavaScript
Learn how to add or remove event listeners from elements with ease.
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JavaScript · Split a JavaScript string into words
Learn how to split a string into words, using the
Intl.SegmenterAPI. -
JavaScript · Initialize a JavaScript array with a sequence of generated values
Ever wanted to initialize an array with a sequence of generated values? Here's a few ways to do it.
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JavaScript · What is the difference between JavaScript's for...in, for...of and forEach?
Learn the differences between the three most commonly used iteration methods in JavaScript, that often confuse beginners and veterans alike.
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JavaScript · How can I define an enum in JavaScript?
Enums are part of TypeScript, but what about defining enums in plain old JavaScript? Here are a few way you can do that.
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JavaScript · Digitize a number in JavaScript
Learn how to convert any number to an array of digits, as well as how to sum the digits and compute the digital root efficiently.
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JavaScript · 4 JavaScript Array methods you must know
JavaScript arrays have a very robust API offering some amazing tools. Learn the 4 must-know JavaScript array methods in this quick guide.
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JavaScript · How can I traverse an undirected tree using DFS or BFS in JavaScript?
Learn how to traverse an undirected tree using Depth-First Search (DFS) or Breadth-First Search (BFS) in JavaScript.
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JavaScript · Understanding the "this" keyword in JavaScript
JavaScript's
thiskeyword can confuse beginners and veterans alike. Learn how it works in different scenarios and start using it correctly. -
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 · JavaScript Operator Cheatsheet
Quick reference for JavaScript operators.
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JavaScript · What are the differences between Maps and objects in JavaScript?
Maps and objects are very similar, but they have some differences that can help you decide which one better fits your use-case.
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JavaScript · Get the index of an array item in a JavaScript for...of loop
Did you know you can get the index of an array item in a JavaScript for...of loop? Learn how with this bite-sized tip.
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JavaScript · How to secure your JavaScript code from vulnerable dependencies
Keep your code, data, and users safe by following these simple tips to secure your JavaScript projects from vulnerable dependencies.