To do this, we can use the.from() method. There is no map array of.map()Įveryone probably knows about the.map() method for arrays, but you can use another solution to achieve a similar effect and the code is very concise. To do this, we can use.splice(start, valueToRemove, valueToAdd) and pass in all three parameters, which specify where to start the modification, how many values to change, and add new values. Sometimes it's necessary to replace a particular value in an array when creating code, and there's a nice neat way to do it that you might not know about.

returns // The second method var uniqueFruits2 = The first method var uniqueFruits = om( new Set(fruits)) I want to show you two possible methods, one using the.from() method and the second using the expansion operator (.). This is a quick and easy solution to this problem, for which you can use the new Set(). This is a very popular interview question about Javascript arrays, how to extract unique values from Javascript arrays. Given that arrays are one of the most fundamental topics in the Javascript language that you can learn about at the beginning of your programming, in this article I want to show you some tricks that you might not know about and could be very useful.

Git repository address: /yzsunlei/ja.Īrrays are one of the most common concepts in Javascript, and they give us many possibilities for working with the data stored in them. Why am I creating this Git repository? Learn and follow up new ideas and technologies of web development by translating foreign Web related technical articles.

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Three articles are expected to be translated as follows:

Array includes js