javascript - Jquery: time counter until the register will be open -

i need create simple time counter until register open.

i have create karate class on each sunday @ 13:00

now want allow users register class 11:00

when counter hits time set ( example 11:00) timer disappear , action (like register button show).

i need server time (it can done php).

var date = new date("<?php echo date("y-m-d h:i:s"); ?>"); 

now need create time counter show hourse , minuts left untile 11:00 form server time (when user hit webpage).

for example:

if server time 10:42 counter show 18 minuts , 00 seconds left. , counter start counting time down.

you may try option, can have timer function below:

function timer(till, ontimerelapsed) {    var = new date();    if (from < till){       console.log(from);        settimeout(function() {          timer(till, ontimerelapsed);       }, 1000);          return false;    }     ontimerelapsed()      return true;        } 

you can invoke on page load passing time (date) @ want timer elapsed. ex: elapse timer after 1 min current time:

var till = new date((new date()).gettime() + 1000*60); timer(till, function(){alert('timer elapsed');}); 

in place of alert in callback can have code register.