React check how many times a component re-renders

console.log will work, if you place it within your render function. If you're concerned about a component re-rendering too many times, try extending React.PureComponent. Info about PureComponent can be found in React's docs. You could also look into the shouldComponentUpdate method to see if that will help solve your re-rendering. Info about that is also in their docs. Good luck!

you can place console.count('counter') in your render function to check this. Here you'll find all the details about console.count link