How can I implement custom validation in different programming languages?

How can I implement custom validation in different programming languages?

You can implement custom validation by defining rules specific to your application's needs. Which language are you using?

I'm using JavaScript. Can you give me an example?

Sure! In JavaScript, you can create a function that checks if an input meets certain criteria, like this:

function validateInput(input) {
    return input.length > 5; // Example rule: input must be longer than 5 characters
}

Would you like to see examples in other languages?

Yes, how about Python?

In Python, you can use a similar approach:

def validate_input(input):
    return len(input) > 5  # Example rule: input must be longer than 5 characters

Let me know if you need more examples!