Why does Array.filter(Number) filter zero out in JavaScript?

Question

I\'m trying to filter all non-numeric elements out from an array. We can see the desired output when using typeof. But with Number, it filters zero out.

Here\'s the

Answer 1

Here is another example showing how to remove multiple indices from an Array of numbers, and dealing with the 0:

const array = [0,1,2,3,4,5,6,7,8,9]
console.log('init', array)

const indicesToDel = [2, 3, 5, 9]
console.log('indices to del', indicesToDel)

let result = array.filter( (item, index) => !indicesToDel.includes(index) ? Number.isFinite(item) : false )
console.log('result', result)