Question

I’m trying to display a different image depending on the timer’s result and can’t find a way through. So far I have a start and stop button, but when I click stop, I want to use the value the timer is on and display an image(on alertbox or the webpage itself) depending on that value.

if( timer =>60){
     img.src("pizzaburnt.jpg");
}elseif (timer <=30){
   img.src("pizzaraw.jpg");
}
else{
img.src("pizzaperfect.jpg
}





///Time
        var check = null;

        function printDuration() {
            if (check == null) {
                var cnt = 0;

                check = setInterval(function () {
                    cnt += 1;
                    document.getElementById("para").innerHTML = cnt;
                }, 1000);
            }
        }

    //Time stop
        function stop() {
                        clearInterval(check);
                        check = null;
                        document.getElementById("para").innerHTML = '0';

                }

**HTML**
 <td>
  Timer :<p id="para">0</p>
 </td>

Any advice or dicussion would be great, thanks.

Answer 1

Something like this would work better and it’s more compact:

var img = document.getElementById("image");
var imageSrcs = ['pizzaRaw.jpg', 'pizzaPerfect.jpg', 'pizzaBurnt.jpg'];
var imageIndex = 0;
var interval = setInterval(animate, 30000); //change image every 30s
var animate = function() {
    //change image here
    //using jQuery:
    img.src(imageSrcs[imageIndex]);

    imageIndex++; //move index for next image

    if (imageIndex == imageSrcs.length) {
        clearInterval(interval); //stop the animation, the pizza is burnt
    }
}
animate();

Reason you wouldn’t want to use an increment variable and a 1 second timer is because your just conflating your logic, spinning a timer, and making a bit of a mess when all you really want is the image to change every 30 seconds or whenever.

Hope this helps.