Node.js lodash flatten() flatten array

var _ = require('lodash');

// get an array of the values, changing any subarrays to flattend values
var values2 = [ 1, 3, 4, [ 6, 8, 9]];

var v2 = _.flatten(values2);
console.log(v2);//from w w  w . ja  v a 2 s  . co m


//Flattens a nested array. 
//If isDeep is true the array is recursively flattened, 
//otherwise it is only flattened a single level.


var withoutdeep = _.flatten([1, [2, 3, [4]]]);
console.log(withoutdeep);
var withisdeep = _.flatten([1, [2, 3, [4]]], true);
console.log(withisdeep);