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When do you need to handle exceptions in coffeescript?


Asked by Jane Howard on Dec 01, 2021 CoffeeScript



An exception (or exceptional event) is a problem that arises during the execution of a program. When an Exception occurs, the normal flow of the program is disrupted and the program/Application terminates abnormally, which is not recommended, therefore these exceptions are to be handled.
In fact,
CoffeeScripts supports exception/error handling using the try catch and finally blocks. The functionalities of these blocks are same as in JavaScript, the try block holds the exceptional statements, the catch block has the action to be performed when an exception occurs, and the finally block is used to execute the statements unconditionally.
Next, When an exception occurs in the try block, the exception is placed in e and the catch block is executed. The optional finally block executes unconditionally after try/catch. The following example demonstrates the Exception handling using try and catch blocks in CoffeeScript.
Accordingly,
On executing, the CoffeeScript file produces the following output. CoffeeScript also supports the throw statement. You can use throw statement to raise your builtin exceptions or your customized exceptions. Later these exceptions can be captured and you can take an appropriate action.
Besides,
CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way. The golden rule of CoffeeScript is: “It’s just JavaScript.” The code compiles one-to-one into the equivalent JS, and there is no interpretation at runtime.