then in try catch block code example

Example 1: node js try catch

try {
  nonExistentFunction();
} catch (error) {
  console.error(error);
  // expected output: ReferenceError: nonExistentFunction is not defined
  // Note - error messages will vary depending on browser
}

Example 2: javascript try

var someNumber = 1;
try {
  someNumber.replace("-",""); //You can't replace a int
} catch(err) {
 console.log(err);
}

Example 3: try catch error

try {
console.log('hello');
}
catch (e){
}

Example 4: try catch exception

First try block try to handle it
if not then catch block will handle it.
Finally block will executed regardless
of the outcome