React Js Array Map

The map() function also takes in an optional second argument, which you can pass. A map is not the feature of react. An array in javascript comes with a plethora of functions to work with.

Map() calls a function once for each element in an array. This essentially means that any javascript array has access to the map function. Rendering multiple components you can build collections of elements and include them in jsx using curly braces {}.

Map() calls a function once for each element in an array.

The array map () function in javascript is used to create a new array with a given array, by executing a function for all the elements in the given array. We will implement a map function inside the return of component which will look something like this: Think of looping as a way to progress from one element to another in a list, while still maintaining the order and position of each element. The map () method creates a new array by calling a provided function on every element in the calling array.