JS catch exception and throw exception

The TRY statement tests the code block for errors.

The catch statement handles the error.

The throw statement creates a custom error.

Mistakes are bound to happen.

When the JavaScript engine executes JavaScript code, various errors occur:

It could be a syntax error, usually a coding error or typo caused by a programmer.

It may be a misspelling or a missing feature in the language (possibly due to browser differences).

The error may be caused by error output from the server or user.

Of course, it may also be due to many other unpredictable factors.

When an error occurs, the JavaScript engine usually stops and generates an error message when something goes wrong.

The technical term that describes this situation is that JavaScript throws an error.

Try  {  //Run code here  }catch (err)  {  //Handle error here  }


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The throw statement allows us to create custom errors. An exception is thrown in the error-first callback function in the Nodejs of a single thread.

The correct technical term is: Create or throw an exception (exception).

If you use throw with try and catch, you can control the flow and generate custom error messages.

JS catch exception and throw exception