Events in HTML are also used in React. The only difference is their naming is different in React. Events in React are written in camelcase. Say – onclick becomes onClick.
<button onclick="activate()"> activate </button>
Translates to:
<button onClick={activate}> activate </button>
In class-based components, we can directly add arrow functions in the callback. In class-based components, the function has been used in combination with this. For eg: this.activate