Is it possible to listen for an <image>
load event in SVG? If yes, how to do this?
Yes it's possible.
In markup:
<image xlink:href="example.png" width="10" height="10"
onload="alert('loaded')"/>
See jsfiddle.
In script:
<script>
var img = document.createElementNS("http://www.w3.org/2000/svg", "image");
img.addEventListener('load', function() { alert('loaded'); });
// or alternatively:
// img.onload = function() { alert('loaded'); }
img.width.baseVal.value = 100;
img.height.baseVal.value = 100;
img.href.baseVal = "example.png";
</script>
See jsfiddle.