The JavaScript version of sleep() is “await”. The await feature pauses the current aync function.
Example
You can try to run the following code to implement sleep in JavaScript
Live Demo
<!DOCTYPE html>
<html>
<body>
<script>
function setSleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
async function Display() {
document.write('Wait for 5 seconds!');
await setSleep(5000);
document.write('After 5 seconds!');
}
Display();
</script>
</body>
</html>