过滤两个数组返回空白数组

Question

我有这两个数组，并有一个简单的方法来过滤来自数据数组和数据2数组的匹配项。但它应该返回两个项目时返回空数组。我究竟做错了什么？

var data = [{ teamId: 74, teamName: 'Blah' }, 
 
{ teamId: 94, teamName: 'Panhi' }, 
 
{ teamId: 30, teamName: 'Writer' }, 
 
{ teamId: 121, teamName: 'People' }, 
 
{ teamId: 85, teamName: 'Perf' }, 
 
{ teamId: 31, teamName: 'Tell' }, 
 
{ teamId: 32, teamName: 'Gall' }, 
 
{ teamId: 137, teamName: 'Bird' }, 
 
{ teamId: 79, teamName: 'Blue' }, 
 
{ teamId: 119, teamName: 'Red' }, 
 
{ teamId: 66, teamName: 'Pluto' }, 
 
{ teamId: 56, teamName: 'PolarBear' }, 
 
{ teamId: 33, teamName: 'Praxis' }, 
 
{ teamId: 62, teamName: 'Purple' } 
 
]; 
 

 
var data2 = [ { id: 1, reId: 52, teamId: 94 }, 
 
    { id: 2, reId: 52, teamId: 32 } ]; 
 

 
var found = data.filter(i => i.teamId === data2.teamId); 
 
console.log(found);

Answer 1

data2是array，你应该遍历它与它的每个元素进行筛选。

参考下面的例子：

var data = [{ teamId: 74, teamName: 'Blah' }, 
 
{ teamId: 94, teamName: 'Panhi' }, 
 
{ teamId: 30, teamName: 'Writer' }, 
 
{ teamId: 121, teamName: 'People' }, 
 
{ teamId: 85, teamName: 'Perf' }, 
 
{ teamId: 31, teamName: 'Tell' }, 
 
{ teamId: 32, teamName: 'Gall' }, 
 
{ teamId: 137, teamName: 'Bird' }, 
 
{ teamId: 79, teamName: 'Blue' }, 
 
{ teamId: 119, teamName: 'Red' }, 
 
{ teamId: 66, teamName: 'Pluto' }, 
 
{ teamId: 56, teamName: 'PolarBear' }, 
 
{ teamId: 33, teamName: 'Praxis' }, 
 
{ teamId: 62, teamName: 'Purple' } 
 
]; 
 

 
var data2 = [ { id: 1, reId: 52, teamId: 94 }, 
 
    { id: 2, reId: 52, teamId: 32 } ]; 
 

 
var found = data.filter(i => i.teamId === data2[0].teamId || i.teamId === data2[1].teamId); 
 
console.log(found);

Answer 2

动态解决您的问题。

var data = [{ teamId: 74, teamName: 'Blah' }, 
 
{ teamId: 94, teamName: 'Panhi' }, 
 
{ teamId: 30, teamName: 'Writer' }, 
 
{ teamId: 121, teamName: 'People' }, 
 
{ teamId: 85, teamName: 'Perf' }, 
 
{ teamId: 31, teamName: 'Tell' }, 
 
{ teamId: 32, teamName: 'Gall' }, 
 
{ teamId: 137, teamName: 'Bird' }, 
 
{ teamId: 79, teamName: 'Blue' }, 
 
{ teamId: 119, teamName: 'Red' }, 
 
{ teamId: 66, teamName: 'Pluto' }, 
 
{ teamId: 56, teamName: 'PolarBear' }, 
 
{ teamId: 33, teamName: 'Praxis' }, 
 
{ teamId: 62, teamName: 'Purple' } 
 
]; 
 

 
var data2 = [ { id: 1, reId: 52, teamId: 94 }, 
 
    { id: 2, reId: 52, teamId: 32 } ]; 
 

 
var found = []; 
 

 
found = data.filter(function(i) { 
 
    return data2.find(d => d.teamId === i.teamId); 
 
}); 
 
console.log(found);