Is this more flexible?

Nobody has claimed this yet.

This is my code, but I'm not sure if there will be a problem.
```javascript

const iframe = document.createElement("iframe");
iframe.style.display = "none";
document.body.appendChild(iframe);
iframe.onload = () => {
iframe.onload = null;
var xhr = new XMLHttpRequest();
var pos = 0;
xhr.onprogress = function() {
iframe.contentDocument.write(xhr.response.slice(pos));
pos = xhr.response.length;
while (iframe.contentDocument.body.childNodes.length > 0) {
content.appendChild(iframe.contentDocument.body.childNodes[0]);
}
};

xhr.onload = function() {
iframe.contentDocument.close();
document.body.removeChild(iframe);
};

xhr.responseType = "text";
xhr.open("GET", "comments.inc.txt");
xhr.send();
};

iframe.src = "";

```

The issue only provides an inline JavaScript approach using a hidden iframe, XMLHttpRequest, and comments.inc.txt; no repository file or test is named. Start by locating the related implementation and clarifying what behavior should be more flexible, then define the expected result and a test or reproducible example before making changes.

Written by the indexing model from the issue text.