set timeout value based on time code example

Example 1: set timeout javascript

setTimeout( () => {
 	alert("J'aime les chats"); 
}, 2000);//wait 2 seconds

Example 2: js after settimeout

function doHomeWork(subject, callback){
    setTimeout(callback,500);
    console.log("doing my homework:", subject)
}

doHomeWork("Maths", function(){console.log("finished my homework");});