You can also open new windows and set them to close within setTimeout. Here's how:
STEP ONE
Leave A Message:
< p >Click the button to open a new window. After 3 seconds it will close on its own (spooky).< / p >
STEP TWO
Make The Button:
< button onclick="openWin()">open me< /button >
STEP THREE
Activate The Script:
< script >
function openWin() {
var myWindow = window.open("", "myWindow", "width=200, height=100");
myWindow.document.write("< p >nyello!< /p >");
setTimeout(function(){ myWindow.close() }, 3000);
}< / script >