Answers for "filter javascript get only number from array"

how to filter through array extracting only numbers in js

//if its an array of objects
arr.filter((item) => typeof(item.key) === 'number')

//if its an array of values
arr.filter((item) => typeof(item) === 'number')

how to filter an array to only get numbers

function filterArray(arr) {
	return arr.filter(el => Number.isInteger(el));
}