// Sleep for 1 second (1000 milliseconds)                        
setTimeout(function() {
    console.log("Slept for 1 second.");
}, 1000);

// Sleep for 2 seconds (2000 milliseconds)
setTimeout(function() {
    console.log("Slept for 2 seconds.");
}, 2000);

// Sleep for 3 seconds (3000 milliseconds)
setTimeout(function() {
    console.log("Slept for 3 seconds.");
}, 3000);

// Sleep for 5 seconds (5000 milliseconds)
setTimeout(function() {
    console.log("Slept for 5 seconds.");
}, 5000);