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Throwing exceptions with specific values in JavaScript

In JavaScript, throw statement throws a user-defined exception. It can be an expression, values of primitive types or Objects. Here are a few examples.

// throw an exception, expression specifies the value of the exception. eg:

throw 'Error2'; // generates an exception with a string value
throw 42;       // generates an exception with the value 42
throw true;     // generates an exception with the value true
throw new Error('Required');  // generates an error object with the message of Required


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