Baseline Widely available
The insertAdjacentElement() method of the Element interface inserts a given element node at a given position relative to the element it is invoked upon.
insertAdjacentElement(position, element)
position
A string representing the position relative to the targetElement; must match (case-insensitively) one of the following strings:
'beforebegin': Before the targetElement itself.'afterbegin': Just inside the targetElement, before its first child.'beforeend': Just inside the targetElement, after its last child.'afterend': After the targetElement itself.element
The element to be inserted into the tree.
The element that was inserted, or null, if the insertion failed.
SyntaxError DOMException
Thrown if the position specified is not a recognized value.
TypeError
Thrown if the element specified is not a valid element.
<!-- beforebegin -->
<p>
<!-- afterbegin -->
foo
<!-- beforeend -->
</p>
<!-- afterend -->
Note: The beforebegin and afterend positions work only if the node is in a tree and has an element parent.
beforeBtn.addEventListener("click", () => {
const tempDiv = document.createElement("div");
tempDiv.style.backgroundColor = randomColor();
if (activeElem) {
activeElem.insertAdjacentElement("beforebegin", tempDiv);
}
setListener(tempDiv); // Definition in the linked GitHub demo
});
afterBtn.addEventListener("click", () => {
const tempDiv = document.createElement("div");
tempDiv.style.backgroundColor = randomColor();
if (activeElem) {
activeElem.insertAdjacentElement("afterend", tempDiv);
}
setListener(tempDiv); // Definition in the linked GitHub demo
});
Have a look at our insertAdjacentElement.html demo on GitHub (see the source code too.) Here, we have a sequence of <div> elements inside a container. When one is clicked, it becomes selected and you can then press the Insert before and Insert after buttons to insert new divs before or after the selected element using insertAdjacentElement().
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