In JavaScript, how can I have a function run at a specific time?

Question

I have a website that hosts a dashboard: I can edit the JavaScript on the page and I currently have it refreshing every five seconds.

I am trying to now get a

Answer 1

I will suggest to do it in Web Worker concept, because it is independent of other scripts and runs without affecting the performance of the page.

1. Create a web worker (demo_worker.js)

   var i = 0;
   var date = new Date();
   var counter = 10;
   var myFunction = function(){
       i = i + 1;
       clearInterval(interval);
       if(date.getHours() === 8 && date.getMinutes() === 0) {
           counter = 26280000;
           postMessage("hello"+i);
       }    
       interval = setInterval(myFunction, counter);
   }
   var interval = setInterval(myFunction, counter);
   

2. Use the web worker in Ur code as follows.

   var w;    
   function startWorker() {
       if (typeof(Worker) !== "undefined") {
           if (typeof(w) == "undefined") {
               w = new Worker("demo_worker.js");
               w.onmessage = function(event) {
                   window.print();
               };
           } else {
               document.getElementById("result").innerHTML = "Sorry, your browser does not support HTML5 Web Workers";
           }
       }
   }
   

I think it will help you.