js array filter false value

 false, null, 0, “”, undefined, and NaN are commonly referred to as false values

let arr=['1', null, '', false, '2', '3']

 In some task scenarios, we will get false values ​​in the array, these false values ​​are not what we want, such as getting input in the table

traditional treatment

let arr = val.filter((n) => n); // ['1','2','3']

 There is also a compact method with the help of lodash

import _ from 'lodash';

export function removeArray(arr: []) {
  let obj =_.compact(arr)
  return obj;
}

console.log(removeArray(arr)) // ['1','2','3']