console.log('index start...');

const intervalSeconds = 3;

async function myTimeoutFunction()
{
    console.log('index:setInterval start...');
    const res = await fetch('https://v2.jokeapi.dev/joke/Programming?type=single');
    const json = await res.json();
    console.log('index:setInterval joke: ' + json.joke);
    console.log('index:setInterval done.');
    
    setTimeout(myTimeoutFunction, intervalSeconds * 1000);
}

myTimeoutFunction();

console.log('index done.');