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If you know javascript, you are more than half way there. TypeScript consists of a few parts. The first is the TypeScript language — this is a new language which contains all JavaScript features . Check out the specs for more information. Summary: in this tutorial, you will learn how to merge two or more JavaScript objects and create a new object that combines the properties of all the objects. To merge objects into a new one that has all properties of the merged objects, you have two options: Use a spread operator ( ) Use the Object.assign () method.
let nums1 = [1, 2, 3, 4] let nums2 = [3, 4, 5, 6] let nums3 = [5, 6, 7, 8] We have to merge them so the our new array becomes: combinedNums = [1, 2, 3, 4, 3, 4, 5, 6, 5, 6, 7, 8] Using concat () Method: The concat () method accept arrays as arguments and returns the merged array.