我想在我的 Ap 中进行条件渲染,例如: 按性质或国家划分的总量,等等... 我怎样才能在我的应用程序中显示一些条件,例如: 自然数量的总和,例如:“ca”?
"_id": {
"$oid": "6015d4d94dce3b095867175b"
},
"nature": "ebit",
"country": "france",
"year": 2020,
"amount": 20000,
"comments": [],
"__v": 0
}
{
"_id": {
"$oid": "6015d5064dce3b095867175c"
},
"nature": "ca",
"country": "france",
"year": 2019,
"amount": 30000,
"comments": [],
"__v": 0
}
{
"_id": {
"$oid": "6015d5064dce3b095867175c"
},
"nature": "ca",
"country": "france",
"year": 2019,
"amount": 30000,
"comments": [],
"__v": 0
}
{
"_id": {
"$oid": "6015d5064dce3b095867175c"
},
"nature": "ca",
"country": "germany",
"year": 2019,
"amount": 30000,
"comments": [],
"__v": 0
}
到目前为止我有这个:
return (
<div>
<ul>
{!isEmpty(posts[0]) &&
<li>
{posts.map((post) => post.amount).reduce((acc, curr) => acc + curr, 0)}
</li>
}
</ul>
</div>
)
提前谢谢你,希望我的问题很清楚。