const list1 = [
	{openId: 1},
	{openId: 2},
	{openId: 9},
	{openId: 4},
	{openId: 5}
]

const list2 = [
	{openId: 1},
	{openId: 3},
	{openId: 8},
	{openId: 4},
	{openId: 5}
]

const data = list1.map(item => list2.find(s => s.openId === item.openId)).filter(item => item)

//打印data的结果

[
	{openId: 1},
	{openId: 4},
	{openId: 5}
]