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Lodash _.compact() Function

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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.

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:



Screenshot-2023-10-18-122431

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 _.reduce() 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);

                    

Output:



Last Updated : 20 Oct, 2023
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