Script
var myMsg = new Array();
myMsg[0] = "This is a 'Typewriter' message. ";
myMsg[1] = "Want to know how it's done? ";
myMsg[2] = "Learn JavaScript!!!! ";
myMsg = myMsg.join(" ");
for (var Index = 0; Index < myMsg[Index].length; Index++) {
alert(myMsg);
}
RESULT: