flatMap()

array,tipjs

Use flatMap() creates a new array with sub-array elements flattened by specified depth.

example

[[2], [4], [6], [8]].flatMap(val => val/2) // [ 1, 2, 3, 4 ]

syntax

var new_array = arr.flatMap(function callback(currentValue[, index[, array]]) {
 // return element for new_array
}[, thisArg])

Callback in javascript

Ajax, call jQuery POST to node.js expressjs

Sự khác biệt giữa substr và substring

JavaScript: async/await with forEach

flatMap()