Map An Array In React

Import { useeffect, usestate } from react; Const mylist = myarray.map((item) => Const fibonaccinumbers = [0, 1, 1, 2, 3, 5, 8, 13, 21, 34] const doubledfibonaccinumbers = fibonaccinumbers.map( number => number * 2) // [0, 2, 2, 4, 6, 10, 16, 26, 42, 68]

In the render method, iterated array of objects using map method and construct the result object. That means there is no need to call components and their props as. To demonstrate the above steps we will consider an example to render an array of string values in react js.

If showmore is true, then we call items.map with a callback to render all the content of items in their own p elements.

The.map () method allows you to run a function on each item in the array, returning a new array as the result. Const fibonaccinumbers = [0, 1, 1, 2, 3, 5, 8, 13, 21, 34] const doubledfibonaccinumbers = fibonaccinumbers.map( number => number * 2) // [0, 2, 2, 4, 6, 10, 16, 26, 42, 68] Let’s save the following “employees” array in a separate file named “employees.js”. 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.