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clock-interval

perfect-interval

A precise interval timer pinned to system clock

How to use

npm install clock-interval

Example usage

Update an element with the currnt time

var clockInterval = require('clock-interval');
 
function pad(num) {
  return ('0' + num).slice(-2);
}
  
clockInterval(function() {
    var clockEl = document.getElementById('clock'),
        dateObj = new Date(); 
      clockEl.innerHTML = pad(dateObj.getHours()) + ':' + pad(dateObj.getMinutes()) + ':' + pad(dateObj.getSeconds());
});

Cancel the interval

var timer = clockInterval(function() {});
 
// Cancel the timer 
timer.cancel();

Why not use setInterval?