Nested Map In React Js

Thus a duplicate pair is not allowed in a map thus it offers a fast searching of data. The template will have the map () method to loop over the items inside the collection as shown below: Afterward, install react router and read the following react router tutorial to get yourself aligned to what.

The structure of an object in reactjs can be nested many times and can get complicated quickly. Follow edited oct 2, 2017 at 7:07. That way, each option is associated to the proper level it is nested within the entire dropdown.

Let’s see how we can create a list in react using a simple project.

Each value stored in the map is mapped to a unique key. We have two components here mainpage and users. Define an object datacollection inside the app component. Var scores = [ [2, 7], [13, 47], [55, 77]];