js 去掉值为空的可以吗

let arr = [1, null, 2, undefined, '', 3];
let newArr = arr.filter(item => item !== null && item !== undefined && item !== '');
console.log(newArr); // 输出: [1, 2, 3]

let arr = [1, null, 2, undefined, '', 3];
let newArr = arr.reduce((acc, item) => {
  if (item !== null && item !== undefined && item !== '') {
    acc.push(item);
  }
  return acc;
}, []);
console.log(newArr); // 输出: [1, 2, 3]

let obj = { a: 1, b: null, c: undefined, d: '', e: 2 };
let newObj = Object.keys(obj).reduce((acc, key) => {
  if (obj[key] !== null && obj[key] !== undefined && obj[key] !== '') {
    acc[key] = obj[key];
  }
  return acc;
}, {});
console.log(newObj); // 输出: { a: 1, e: 2 }