when we use try catch in javascript code example

Example 1: try catch in javascript

try {
  // Try to run this code 
}
catch(err) {
  // if any error, Code throws the error
}
finally {
  // Always run this code regardless of error or not
  //this block is optional
}

Example 2: try catch finally in javascript

try {
  alert( 'try' );
  if (confirm('Make an error?')) BAD_CODE();
} catch (e) {
  alert( 'catch' );
} finally {
  alert( 'finally' );
}