Map Arrow Function Javascript
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Map Arrow Function Javascript
The syntax for the map () method is as follows: Common javascript methods such as map(), filter() and reduce() can look much cleaner with the help of arrow functions. One nice way to use an if/else is though a ternary.
As a parameter, we pass a function; New map() creates a new map: They also don’t have super, but we didn’t study it yet.
This method creates a new array with the result of the passed function.
Note that unlike in the.filter() example, the array size of the original array and the output array is always the same when we use the.map() function. Entries() returns an iterator with the [key, value] pairs in a map: In this article, you will learn why and how to use each one. One of the most notable changes were arrow functions, a new and concise way to write functions.
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