JSFiddle - React, Tailwind, and code Playground

JavaScript

function createElement1() {
    var div = document.createElement("div");
    div.style.border = "1px dotted red";
    div.onmouseover=function(){div.style.color = "red"};
    div.innerHTML = "I'm the div";
}

function getFunctionBody(func) {
    var functionText = func.toString();
    return functionText.slice(functionText.indexOf("{") + 1, functionText.lastIndexOf("}"));
}

alert(getFunctionBody(createElement1));