document.addEventListener("DOMContentLoaded", function () {
// Put your code here ...
var html = '<h1 id="performance-timing">' + performance.timing.domComplete + '</h1>';
appendHtml(document.body, html);
});
function appendHtml(el, str) {
var div = document.createElement('div');
div.innerHTML = str;
while (div.children.length > 0) {
el.appendChild(div.children[0]);
}
}
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