如何创建计时器然后通知用户它的完成

Question

I have a website and I want to create a timer for a user like. If they can't click the submit button within 30 seconds it will notify the user that it is pass 30 seconds and your still not clicking the button something like that. I've tried searching for an alarm clock as an example for php yet I can't find anything. Hope it can be done using php or js. Thank you for your replies

Answer 1

I hope this will help you.

var userSubmit = false;
var timeout;
if (!userSubmit) {
   timeout = setTimeout( function(){ 
      alert("Timer Done"); 
   }, 3000);
}
function alertSubmit() {
 userSubmit = true;
 clearTimeout(timeout);
}

<button onclick="alertSubmit()">Try it</button>

</div>