How can I handle errors when using rest parameters in JavaScript?

How can I handle errors when using rest parameters in JavaScript?

You can handle errors in functions using rest parameters by validating the input before processing it. Would you like an example?

Yes, please provide an example of how to do that.

Sure! Here's a simple function that uses rest parameters and checks for errors:

function sum(...numbers) {
    if (numbers.length === 0) {
        throw new Error('No numbers provided!');
    }
    return numbers.reduce((acc, num) => acc + num, 0);
}

This function throws an error if no numbers are passed.

What if I want to handle specific types of errors?

You can use try-catch blocks to handle specific errors. For example:

try {
    sum(); // No numbers provided
} catch (error) {
    console.error(error.message);
}