Uses of the finally statement

finally is useful for more than just exception handling — it allows the programmer to avoid having cleanup code accidentally bypassed by a return, continue, or break.

Just a simple and straightforward example that shows the difference. There is a return that breaks the function completion, but the console.log in finally is called while the last console.log is skipped.

let letsTry = () => {

  try {
    // there is a SyntaxError
    eval('alert("Hello world)');
    
  } catch(error) {
    console.error(error);
	
    // break the function completion
    return;
  } finally {
      console.log('finally')
  }

  // This line will never get executed
  console.log('after try catch')
}

letsTry();