<center>
<button type="button" onclick="myFunction()" id="countdown" style="background-color: DodgerBlue; font-family: verdana; font-size: 20px; color: white; padding: 12px 30px; ">Go To Download</button></center>
<div style="text-align: center;">
<a href="###" id="download_link" style="display: none;"><button style="background-color: DodgerBlue; border: none; color: white; padding: 12px 30px; cursor: pointer; font-size: 20px;" >Downlaod Link</button></a>
<noscript>JavaScript needs to be enabled in order to be able to download.</noscript>
<script type="application/javascript">
function myFunction(){
var message = "%d seconds before download link appears";
// seconds before download link becomes visible
var count = 15;
var countdown_element = document.getElementById("countdown");
var download_link = document.getElementById("download_link");
var timer = setInterval(function(){
// if countdown equals 0, the next condition will evaluate to false and the else-construct will be executed
if (count) {
// display text
countdown_element.innerHTML = "You have to wait %d seconds.".replace("%d", count);
// decrease counter
count--;
} else {
// stop timer
clearInterval(timer);
// hide countdown
countdown_element.style.display = "none";
// show download link
download_link.style.display = "";
}
}, 1000);
}
</script>
