React - 如何将变量从一个文件获取到另一个文件

Question

The due date to my project is today and I can not fix this problem. This is my first react project so everything is still new to me.

I have a file called "fullcalendar" with an export function which renders a calendar. Now I have an attribute from this calendar that I want to export into another file "popupwindow" as the info that I am getting from the calendar is needed for the popup window. How can I export a variable if I am already exporting the main function in that file "fullcalendar" without using Child and Parent.

I can also add some code for further information

Answer 1

You can use default export to export your function and named export to export other values.

Default export:

function foo(){}
export default foo

// usage in another file:
import foo from './foo.js'

Named export:

const value = 25
export value
// usage in another file:
export {value} from './foo.js'