Create a Button in React that Changes Local State and Automatically Updates the UI

InstructorChris Achard

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After creating some state with useState, we can call the set function to update the data in local state, which will automatically "re-render" the component, and update the UI.

To do that, we'll first create a new function that will update the state that we want:

const updateCount = () => {
  setCount(count + 1)

and then we can pass that updateCount function into the onClick of a button:

<button onClick={updateCount}>Click Me!</button>

which will then call updateCount once clicked, which will call setCount, which will update the count state, and automatically display that update on the UI.