Javascript 中 React 格式的对象和数组

Question

I have local data where I can access the first item using data{0}. Now I am moving over to a database and I get the data and create another object, but can no longer access the first item using data{0}.

I feel like I have a data nesting issue of some kind, but can't figure out how to format the data correctly. You can see in both cases I'm definitely getting data:

console.log result

Local Data:

module.exports = [
  {
    date: "01/01/1802"
}
]

Remote Database Data:

    const databaseResult = web.lists
  .getByTitle("Database-Content")
  .items.get()
  .then((TimelineConent) => {
    TimelineConent.forEach(function (item, index) {
      items.push({
        date: item.date,
       
      });
    });

  });


this.setState({ items: items });

How can I format my database data to match the original local data format?

Answer 1

Your data is stored as objects in an array, which means that you have to use data[0] instead of data{0} to get the first object from the array. Then you can access the values of the object using pointers.

let data = [{value: 2}]
console.log(data[0].value)

Outputs: 2

I'm not sure whether you are asking about this or about preventing the nesting at data creation.