Find the most frequent element in a JavaScript array
Find the most frequently occurring element in a JavaScript array of primitives or objects.
JavaScript Array 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 · 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.
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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 · 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 · 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 · 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 · 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 · Split a JavaScript array into chunks
Chunk an array or iterable into arrays of a specified size or a given number of chunks.
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JavaScript · Replace or append a value in a JavaScript array
Quickly and easily replace or append a value in a JavaScript array.
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JavaScript · Convert a NodeList to a JavaScript array
Ever needed to convert a
NodeListto an array in JavaScript? Here's the fastest way to do so. -
JavaScript · Heap sort
Sort an array of numbers, using the heapsort algorithm.
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JavaScript · Calculate the ranking of a JavaScript array
Calculate the ranking of an array based on a comparator function in JavaScript.
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JavaScript · Selection sort
Sort an array of numbers, using the selection sort algorithm.
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JavaScript · Quick sort
Sort an array of numbers, using the quicksort algorithm.
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JavaScript · Make any JavaScript value iterable
Did you know you can define an iterator for any JavaScript value? This quick tip will show you how.
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JavaScript · Bucket sort
Sort an array of numbers, using the bucket sort algorithm.
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JavaScript · Sampling, shuffling and weighted selection in JavaScript arrays
Learn how to shuffle, sample and perform weighted selection on JavaScript arrays.
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JavaScript · How can I apply bipartite coloring to an undirected tree in JavaScript?
Learn how to apply bipartite coloring to an undirected tree in JavaScript, ensuring that no two adjacent nodes share the same color.
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JavaScript · Min and max value of a JavaScript array
When working with JavaScript arrays, you might need the minimum or maximum value. Here are a few quick and easy ways to do it.
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JavaScript · Toggle element in a JavaScript array
Remove an element from an array if it's included in the array, or push it to the array if it isn't.
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JavaScript · Map a JavaScript object to an array
Map an object to an object array, using the provided mapping function.