How can I implement async validation in JavaScript?

How can I implement async validation in JavaScript?

You can implement async validation in JavaScript using Promises or async/await. Would you like a code example?

Yes, please provide a code example.

Here's a simple example using async/await:

async function validateInput(input) {
    const response = await fetch(`/validate?input=${input}`);
    const data = await response.json();
    return data.isValid;
}

This function checks if the input is valid by making an API call.

What if I want to validate multiple fields at once?

You can use Promise.all to validate multiple fields concurrently. Here's an example:

async function validateMultiple(inputs) {
    const validations = inputs.map(input => validateInput(input));
    return await Promise.all(validations);
}