Web Reference: Diff Two Arrays Compare two arrays and return a new array with any items only found in one of the two given arrays, but not both. In other words, return the symmetric difference of the two arrays. Note: You can return the array with its elements in any order. Array.concat()combines two or more arrays. It will return you a new array (instead of altering your existing ones). We now have all our items from arr1 and arr2combined into a new array. We now have to figure out if an item exists more than once and also how to remove it from the array. The next useful new method we stumble upon is filter(). Dec 30, 2019 · Learn how to solve freecodecamp javascript algorithms in various ways! This series is up-to-date with all ES6 and beyond javascript notations.
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