1.使用find、filter筛选数组
const personList = [
{ name: '刘德华', age: 56 },
{ name: '蔡徐坤', age: 25 },
{ name: '熊凤山', age: 65 }
]
使用find 查询出name=’刘德华‘的数据
const result = personList.find(r => r.name == '刘德华')
console.log(result) //{name: '刘德华', age: 56}
使用filter查询出name='刘德华'的数据
const result = personList.filter(r => r.name == '刘德华')
console.log(result) //{name: '刘德华', age: 56}
区别:
filter 查询不到则返回 [] 空数组
find 查询不到则返回undefind
2.获取两个数组共同集合 使用some
const personList = [
{ name: '刘德华', age: 56 },
{ name: '蔡徐坤', age: 25 },
{ name: '熊凤山', age: 65 }
]
const personList2 =
[
{ name: '刘德华', age: 56 },
{ name: '乌仁吉', age: 45 },
{ name: '熊凤山', age: 65 }
]
const result = personList.filter(r => personList2.some(x => x.name == r.name));
console.log(result) // [{"name": "刘德华","age": 56},{"name": "熊凤山","age": 65}]
程序员灯塔
转载请注明原文链接：ES6 数组筛选
转载请注明原文链接：ES6 数组筛选