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JavaScript Node.js Basics (2014) Building a Command Line Application Using try and catch

Vladyslav Burdeniuk
Vladyslav Burdeniuk
16,795 Points
Posted by Vladyslav Burdeniuk
Vladyslav Burdeniuk
16,795 Points

Where should I place try-catch block of code

Where should I place try-catch block of code

app.js 
var jsonString = 'This is not a JSON String';
var jsonObject = JSON.parse(jsonString);
Ajay Prasannan
Ajay Prasannan
16,002 Points

Hi Vladyslav,

The following worked for me:

var jsonString = 'This is not a JSON String';

try {

  var jsonObject = JSON.parse(jsonString);

} catch(error){

  console.log(error);

}

As you can see, the potentially risky statement parsing the string into JSON is put within a try block, with a catch block following to handle any error.

In a real application, if the string value is only known at run-time, I guess that assignment could be moved into the try block as well. Can anyone else chime in on that? Both versions pass the code challenge.

Hope this helps,

Ajay

1 Answer

Vladyslav Burdeniuk
Vladyslav Burdeniuk
16,795 Points
Vladyslav Burdeniuk
Vladyslav Burdeniuk
16,795 Points

Ajay, thank you) I have solved that issue by putting assignment in the try block as well