mapping array of elements js code example

Example 1: map a property from array of objects javascript

var result = objArray.map(function(a) {return a.foo;});

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)