I am new to react.js and node.js, and I am trying to make a live chat room. I made a function called Chat in a component called Chat.js, but when I tried to call it in the other component that contained everything else, there was an error that said that the function was not defined.

So I wrote this function which calls a function in a different file use Context in React JS

How do I select a definite checkbox using the URL parameter?