insertbefore in javascript code example
Example 1: js insertbefore
let insertedNode = parentNode.insertBefore(newNode, referenceNode)
Example 2: js insert before
const alert_box = document.createElement("div")
alert_box.innerText = "Not allowed!";
alert_box.className = "alert";
const cont = document.querySelector(".container");
const prof = document.getElementById("profile");
cont.insertBefore(alert_box, prof);
Example 3: javascript insertBefore
<div id="parentElement">
<span id="childElement">foo bar</span>
</div>
<script>
let sp1 = document.createElement("span")
let sp2 = document.getElementById("childElement")
let parentDiv = sp2.parentNode
parentDiv.insertBefore(sp1, sp2)
</script>
Example 4: javascript add element above
$( "<p>Test</p>" ).insertBefore( ".inner" );