There is any object (could be an inline object like but also a block element like or ) as original object.
Now I try to set an overlay over this object, with the same position and size.
=> function overlayObject(originalObject)
Creating the new overlay and mirroring the size of the original object works well. I can also append this new element within the originalObject's parent node.
Regarding the position, left+top for achieving the overlay, is still pending and failing. With original objects that have position:absolute or position:fixed, it's easy, but how to get the exact left/top position to use the same with the overlay ?
You can use offsetTop
and offsetLeft
to determine the top and left distance of your element to the parent element:
function createOverlay(el) {
var t = el.offsetTop;
var l = el.offsetLeft;
var newEl = el.cloneNode(true);
newEl.style.margin = "0";
newEl.style.position = "absolute";
newEl.style.left = l + "px";
newEl.style.top = t + "px";
newEl.style.backgroundColor = "rgba(0,0,255,0.3)";
el.offestParent.appendChild(newEl);
}
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