Array Flatten in JavaScript

Array flatten is the foundation concept of programming, in javascript you will seeing it's use in lots of places like in data fetching form api points, showing data tree as list on pages. In this article we seeing what and why it is, differenct approaches and scenerios you facing in interview on that. What nested arrays are In javascript, nested arrays are a simple array whose contain elments or another arrays those can conaint either elments or more arrays. This structure of arrays called nested arrays and also known as multidimentional arrays. You can think it like a big container box in that we place multiple elements or other boxes as elments those further contain elements in sequence. [ 1 , [ 2 , 3 ], 4 , [ 5 , [ 6 ]], 7 ] Here example nested array contain 1, then array [2,3] , another elment 4, one more array [5, [6]] , and lastly element 7. In that there are two nested array first contain 2, 3 and other contain 5 and single value arrya with 6. Why flattening arrays is useful Fla