JavaScript: Remove falsey values from a given array

JavaScript fundamental (ES6 Syntax): Exercise-44 with Solution

Write a JavaScript program to remove false values from a given array.

• Use Array.prototype.filter() to filter out falsy values (false, null, 0, "", undefined, and NaN).

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const compact = arr => arr.filter(Boolean);
console.log(compact([0, 1, false, 2, '', 3, 'a', 'e' * 23, NaN, 's', 34]));
console.log(compact([false, NaN, 'e' * 23]));

Sample Output:

[1,2,3,"a","s",34]
[]

Pictorial Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-1-44 by w3resource (@w3resource) on CodePen.

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