记录--js数组筛选

let arr = [
    {name: 'yibo', age: 25}, 
    {name: 'yiyi', age: 18}, 
    {}]

let newArr = arr.filter(item => 'name' in item)

console.log(arr) // filter不会修改原数组中的值 会返回新的数组
console.log(newArr) // [ { name: 'yibo', age: 25 }, { name: 'yiyi', age: 18 } ]