如何使用值从数组数组中查找数组？

Question

[{_id: "5f7ab0e57b4d3030cc14181b", Name: "Child Support", pic: "https://i.ibb.co/f8bBB8L/food-Charity.png", description: "Lorem ipsum", eventStarts: "20-04-2020"}, {_id: "5f7ab0e57b4d3030cc14181c", Name: "Refuge Shelter", pic: "https://i.ibb.co/7nrP5Vg/babySit.png", description: "Lorem ipsum", eventStarts: "20-01-2020"}, {_id: "5f7ab0e57b4d3030cc14181d", Name: "Food Charity", pic: "https://i.ibb.co/rmkjNyp/bird-House.png", description: "Lorem ipsum", eventStarts: "25-04-2020"}]

如何找到具有 _id 名称的数组，例如“5f7ab0e57b4d3030cc14181c”？

我需要得到那个数组的名字... 使用反应和 MongoDB。 specificEvents = _id ...所以我想用它来查找数组并获取名称。

const Register = () => {
    const [loggedInUser, setLoggedInUser] = useContext(UserContext);
    const { specificEvent } = useParams();
    const [events, setevents] = useState({})

    useEffect(() => {
        fetch('http://localhost:3100/events')
            .then(res => res.json())
            .then(data => {
                setevents(data);

///////// I wanted my finding code here ///////////

            })
    }, [])

Answer 1

您可以使用数组的查找方法。 find() 方法返回提供的数组中满足提供的测试功能的第一个元素的值。

data.find(d => d._id === idToBeSearched);

Answer 2

它可能会起作用，

data.map(data => ({
   if(data._id =="5f7ab0e57b4d3030cc14181c"){
     alert('You can do the rest')
   }
}));

或者如果它不起作用，您可以对数据进行字符串化 -

var find = JSON.stringify(data);
find.map(data => ({
   if(data._id =="5f7ab0e57b4d3030cc14181c"){
     alert('You can do the rest')
   }
}));

希望它能解决你的问题。

Answer 3

这样做解决了...

const { specificEvent } = useParams();
    const [events, setevents] = useState({})

    useEffect(() => {
        fetch('http://localhost:3100/events')
            .then(res => res.json())
            .then(data => {
                setevents(data);
            })
    }, [])


    let getName = {};
    for (let i = 0; i < events.length; i++) {
        const { _id } = events[i];
        if (_id === specificEvent) {
            getName = events[i];
        }
    }
    const { Name } = getName;