Is there an easy way to make nested array flat?

Question

That is to make this:

[ [\'dog\',\'cat\', [\'chicken\', \'bear\'] ],[\'mouse\',\'horse\'] ]

into:

[\'dog\',\'cat\',\'chicken\',\'

Answer 1

The easiest way of flattening the Objects of any depth would be using the flat method

var arr = [['dog','cat', ['chicken', 'bear']],[['mouse','horse'],'lion'] ]; 
var flattened = arr.flat(Infinity);
//output--> ["dog", "cat", "chicken", "bear", "mouse", "horse", "lion"]

More aout Flat()