Chrome Extension

Lodash - Flatten an array to a fixed depth

In lodash, you can flatten the array to a fixed level using flattenDepth method. You just need to pass the depth level value to the method.
const arr = [
    [10], [20, 30, [40, [50]]], 60, [70, [80]]

//Flatten to 1 level
const result_1 = _.flattenDepth(arr, 1);
// => [10,20,30,[40,[50]],60,70,[80]]

//Flatten to 2 level
const result_2 = _.flattenDepth(arr, 2);
// => [10,20,30,40,[50],60,70,80]
Best JSON Validator, JSON Tree Viewer, JSON Beautifier at same place. Check how cool is the tool

In the code snippet, we are flattening an array - arr to level 1 depth and level 2 depth.

_.flattenDepth Lodash

_.flattenDepth(Array, Depth=1)

Argument passed description

Array: [Required] The array that you want to flatten to a fixed depth.

Depth: [Optional] The depth level value to which you want to flatten your array. The default value for this is 1 means if you do not pass any value to it. It will flatten the array to level 1.

Example Demo

Search Index Data (The code snippet can also be found with below search text)

_.flattenDepth lodash
Was this helpful?