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- How to handle error in JavaScript?
- Is error a class in JavaScript?
- Should you throw errors in JS?
- How to get error type in JavaScript?
How to handle error in JavaScript?
JavaScript provides error-handling mechanism to catch runtime errors using try-catch-finally block, similar to other languages like Java or C#. try: wrap suspicious code that may throw an error in try block. catch: write code to do something in catch block when an error occurs.
Is error a class in JavaScript?
In JavaScript, there's an Error class to let us throw exceptions. We can create custom error classes by extending the Error class with our own class and custom logic to throw more specific errors. The Error class has the message , name , and stack properties that we inherit from it.
Should you throw errors in JS?
It's best to avoid throwing errors from inside a Promise, because they may not always be caught, depending on how the code that called them is structured. However it's good practice to return an error when rejecting a Promise, and you can return Error custom types just like any other Error.
How to get error type in JavaScript?
There are 7 types of JavaScript errors: Syntax error, Reference Error, Type Error, Evaluation Error, RangeError, URI Error and Internal Error. Errors in Javascript can be handled using the try... catch... finally construct as well as the throw operator.
