Lodash _.compact() Function

Last Updated : 30 Aug, 2024

Lodash _.compact() function is used to create an array with all false values removed in JavaScript. so it returns a new array of filtered values.

Syntax:

_.compact(array);

Parameters:

array: It is an array to be compacted.

Note: The values are false, null, 0, "", undefined, and NaN are falsey.

Return Value:

This function returns the array after filtering the values.

Examples of Lodash _.compact() Function

Example 1: In this example, we are passing a list of both the true and the false elements to the _.compact() function.

javascript

// Requiring the lodash library  let _ = require("lodash");    // Original array to be compacted  let array = [0, 1, false, 2, '', 3];    let newArray = _.compact(array);  console.log("Before compact: " + array);    // Printing newArray  console.log("After compact: " + newArray);

Output:

Example 2: In this example, we are passing a list containing all the false values to the _.compact() function.

javascript

// Requiring the lodash library  let _ = require("lodash");    // Original array to be compacted  let array = [0, false, '', undefined, NaN];    let newArray = _.compact(array);  console.log("Before compact: " + array);    // Printing newArray  console.log("After compact: " + newArray);

Output:

Example 3: In this example, we are passing a list which contains a false element into _.compact() function.

javascript

// Requiring the lodash library  let _ = require("lodash"); // Original array to be compacted  let array = [false, 'HTML', NaN,  'CSS', 'undefined']; let newArray = _.compact(array); console.log("Before compact: " + array); // Printing newArray  console.log("After compact: " + newArray);

Output:

Example 4: In this example, we are passing a list containing modified false values to the _.compact() function.

javascript

// Requiring the lodash library  let _ = require("lodash");    // Original array to be compacted  let array = [false, true, 'yes', 'no', "no2"];    let newArray = _.compact(array);  console.log("Before compact: " + array);    // Printing newArray  console.log("After compact: " + newArray);