error catch javascript code example

Example 1: catch error message js

try {
  // test code
} catch (error) { // if error
  console.error(error); // return error
}

Example 2: try catch javascript

try {

  alert('Start of try runs');  // (1) <--

  lalala; // error, variable is not defined!

  alert('End of try (never reached)');  // (2)

} catch(err) {

  alert(`Error has occurred!`); // (3) <--

}