JAVASCRIPT

array filter falsy values

const numbersWithFalsyValues = [7, null, 10, 17, false, NaN];
const numbers = numbersWithFalsyValues.filter(Boolean);
console.log(numbers); //[7,10,17]

const namesWithFalsyValues=["Raj", "", "Joy", undefined, false];
const names = namesWithFalsyValues.filter(Boolean);
console.log(names); //['Raj','Joy']

const mixDataWithFalsyValues = [2, 0, "", "Joy", null, undefined, false];
const mixData = mixDataWithFalsyValues.filter(Boolean);
console.log(mixData); //[2,'Joy']

filter the falsy values out of an array in a very simple way!

var arr = [ 0, 1, '', undefined, false, 2, undefined, null, , 3, NaN ];
 
var filtered = arr.filter(Boolean);
console.log(filtered);
 
/*
    Output: [ 1, 2, 3 ]
*/