setTimeout js

script.js

/***************************/
function explode(){
  alert("Boom!");
}
setTimeout(explode, 2000);
/***************************/
var explode = function(){
  alert("Boom!");
};
setTimeout(explode, 2000);
/***************************/
setTimeout(function(){
  alert("Boom!");
}, 2000);
/***************************/
setTimeout("alert('Boom!');", 2000);
/***************************/
function greet(greeting){
  console.log(greeting);
}
/***************************/
function getRandom(arr){
  return arr[Math.floor(Math.random()*arr.length)];
}
/***************************/
var greetings = ["Hello", "Bonjour", "Guten Tag"],
    randomGreeting = getRandom(greetings);
/***************************/
setTimeout(function(){
  greet(randomGreeting);
}, 1000);
/***************************/