Rotate image with javascript

Question

I need to rotate an image with javascript in 90-degree intervals. I have tried a few libraries like jQuery rotate and Raphaël, but they have the same problem - The image is

Answer 1

CSS can be applied and you will have to set transform-origin correctly to get the applied transformation in the way you want

See the fiddle:

http://jsfiddle.net/OMS_/gkrsz/

Main code:

/* assuming that the image's height is 70px */

img.rotated {
    transform: rotate(90deg);
    -webkit-transform: rotate(90deg);
    -moz-transform: rotate(90deg);
    -ms-transform: rotate(90deg);

    transform-origin: 35px 35px;
    -webkit-transform-origin: 35px 35px;
    -moz-transform-origin: 35px 35px;
    -ms-transform-origin: 35px 35px;
}

jQuery and JS:

$(img)
    .css('transform-origin-x', imgWidth / 2)
    .css('transform-origin-y', imgHeight / 2);

// By calculating the height and width of the image in the load function

// $(img).css('transform-origin', (imgWidth / 2) + ' ' + (imgHeight / 2) );

Logic:

Divide the image's height by 2. The transform-x and transform-y values should be this value

Link:

transform-origin at CSS | MDN

Answer 2

Hope this can help you!

<input type="button" id="left"  value="left" />
<input type="button" id="right" value="right" />
<img src="https://www.google.com/images/srpr/logo3w.png" id="image">

<script>
 var angle = 0;
    $('#left').on('click', function () {  
        angle -= 90;
        $("#image").rotate(angle);
    });

    $('#right').on('click', function () {  
        angle += 90;
        $("#image").rotate(angle);
    });
</script>

Try it

Answer 3

Based on Anuga answer I have extended it to multiple images.

Keep track of the rotation angle of the image as an attribute of the image.

function rotate(image) {
  let rotateAngle = Number(image.getAttribute("rotangle")) + 90;
  image.setAttribute("style", "transform: rotate(" + rotateAngle + "deg)");
  image.setAttribute("rotangle", "" + rotateAngle);
}

.rotater {
  transition: all 0.3s ease;
  border: 0.0625em solid black;
  border-radius: 3.75em;
}

<img class="rotater" onclick="rotate(this)" src="https://upload.wikimedia.org/wikipedia/en/e/e0/Iron_Man_bleeding_edge.jpg"/>
<img class="rotater" onclick="rotate(this)" src="https://upload.wikimedia.org/wikipedia/en/e/e0/Iron_Man_bleeding_edge.jpg"/>
<img class="rotater" onclick="rotate(this)" src="https://upload.wikimedia.org/wikipedia/en/e/e0/Iron_Man_bleeding_edge.jpg"/>

Edit

Removed the modulo, looks strange.