How can I implement error handling in my validation functions?

How can I implement error handling in my validation functions?

You can implement error handling by using try-catch blocks to catch exceptions and return meaningful error messages.

Can you give me an example of a validation function with error handling?

Sure! Here's a simple example in JavaScript:

function validateInput(input) {
    try {
        if (!input) throw 'Input cannot be empty';
        if (input.length < 5) throw 'Input must be at least 5 characters long';
        return 'Input is valid';
    } catch (error) {
        return `Error: ${error}`;
    }
}

What if I want to handle multiple types of errors?

You can use multiple catch blocks or a single catch block that checks the type of error and handles it accordingly.