JSFiddle - React, Tailwind, and code Playground

HTML

<div id="mydiv">
<!--
 what is your present
 <code>alert("this is my present");</code>
 where?
 <code>alert("here at my left hand");</code>
 oh thank you! i love you!! hehe
  <code>alert("welcome my honey ^^");</code>
-->
</div>

JavaScript

function Fragment(html) {
    var range = document.createRange();
    range.selectNode(document.body);
    return range.createContextualFragment(html.replace(/%s/g, toString));

    function toString() {
        return String(args[i++]);
    }
}

var mydiv = document.getElementById("mydiv");
var internalContent;

for (node in mydiv.childNodes){
    if (mydiv.childNodes[node].nodeType === 8) {
        internalContent = Fragment(mydiv.childNodes[node].textContent);
    }
}


for (node in internalContent.childNodes) {
    if (internalContent.childNodes[node].nodeType === 1 && internalContent.childNodes[node].tagName === "CODE") {
        console.log(internalContent.childNodes[node].textContent)
    }
}