<img id="$img" src="https://js.cx/clipart/ball.svg" width="40" height="40">
$img.onpointermove = function(event){
if(event.buttons){
this.style.left = this.offsetLeft + event.movementX + 'px'
this.style.top = this.offsetTop + event.movementY + 'px'
this.style.position = 'absolute'
this.draggable = false
this.setPointerCapture(event.pointerId)
}
}