How javascript try…catch statement works

Question

I am trying to test in browsermob if certain input field work or not. I am attempting to use a try...catch statement which I have never used before. I know that the form is:

Answer 1

the code that is likely to throw an exception goes into try { }, The code to be run when an exception is thrown, comes into catch() { }. In catch() you can specify which exceptions you want to catch, and in which automatic variables to put it. finally { } is always run, regardless whether exception was thrown or not.