array mapping javascript code example
Example 1: array map javascript
const array1 = [1, 4, 9, 16];
// pass a function to map
const map1 = array1.map(x => x * 2);
console.log(map1);
// expected output: Array [2, 8, 18, 32]
Example 2: javascripr array.map
array.map( item => item.id )
array2.map( item => item.toString() )
array2.map( item => item * 3 )
// this will apply a transformation to all elements of an array
// "" item => something "" is the transformation (function)
Example 3: js map function
const exampleArray = ['aa','bbc','ccdd'];
console.log(exampleArray.map(a => a.length));
//Would print out [2,3,4]