Javascript throw vs return error

in javascript, both "throw" and "return" serve different purposes in error handling and function execution. the "throw" statement is used to create a custom error, interrupting the normal flow of execution. when an error is thrown, control is transferred to the nearest catch block in the call stack, allowing developers to handle the error gracefully. this mechanism is crucial for robust applications, as it enables the identification and management of exceptional cases.

on the other hand, "return" is utilized to exit a function and provide a value to the caller. when a function returns an error, it typically indicates a failure in processing but doesn't disrupt the execution flow like a thrown error. the caller must check the returned value to determine if an error occurred, which can lead to less clear error handling. thus, "throw" is more suitable for critical errors that require immediate attention, while "return" is better for signaling non-critical issues.
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