How to push only true values to an empty array

Question

I have variables assigned to values as:

let x = 5;
let y = 17;
let z = 0;

const newArr = [];

Here I am trying to push the x, y, x values if they aren't falsy values

I am doing as:

if(x){
  newArr.push(x);
}
if(y){
  newArr.push(y);
}
if(z){
  newArr.push(z);
}

May I know more efficient way to do this, TIA

CertainPerformance · Accepted Answer · 2020-05-12 12:50:05Z

4

You might put all the variables into another array, then filter that array:

let x = 5;
let y = 17;
let z = 0;
const newArr = [x, y, z].filter(Boolean);
console.log(newArr);

answered May 12, 2020 at 12:50

373k55 gold badges354 silver badges359 bronze badges

Sign up to request clarification or add additional context in comments.

1 Answer 1