//statement for Creating Div Element
var firstDiv = document.createElement("div");
//Set Id
firstDiv.setAttribute("class","first");
//Set CSS
var styleNew = "width:200px; height:100px; margin:0 auto; background:#f5f5f5;padding:30px";
firstDiv.style.cssText = styleNew;
//Append or add element created
document.body.appendChild(firstDiv);
//Now create button and click to hide created div
var newbtn = document.createElement("button");
newbtn.innerHTML = "Click me";
firstDiv.appendChild(newbtn);
//click to hide div and then show
newbtn.onclick = function(){
firstDiv.style.display="none";
setTimeout(function(){
firstDiv.style.display = "block"}, 2000)
};
setInterval(function(){alert("bingo")} ,500);
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