How can I implement a retry mechanism in JavaScript?

How can I implement a retry mechanism in JavaScript?

You can implement a retry mechanism using async/await and a loop. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

async function fetchWithRetry(url, retries) {
    for (let i = 0; i < retries; i++) {
        try {
            const response = await fetch(url);
            if (!response.ok) throw new Error('Network response was not ok');
            return await response.json();
        } catch (error) {
            console.error(`Attempt ${i + 1} failed: ${error.message}`);
            if (i === retries - 1) throw error;
        }
    }
}

This function will attempt to fetch a URL a specified number of times.

What if I want to add a delay between retries?

You can use setTimeout to add a delay. Here's an updated version:

async function fetchWithRetry(url, retries, delay) {
    for (let i = 0; i < retries; i++) {
        try {
            const response = await fetch(url);
            if (!response.ok) throw new Error('Network response was not ok');
            return await response.json();
        } catch (error) {
            console.error(`Attempt ${i + 1} failed: ${error.message}`);
            if (i < retries - 1) await new Promise(res => setTimeout(res, delay));
            else throw error;
        }
    }
}

This will wait for the specified delay before retrying.