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Fix #14 #15

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Fix #14 #15

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c9fd814
Fix loading of external javascript from a CDN
mruijzendaal Aug 29, 2025
2c9dba0
Fix loading of local javascript
mruijzendaal Aug 29, 2025
0b316e0
Create CNAME
mruijzendaal Aug 29, 2025
5f92a39
Delete CNAME
mruijzendaal Aug 29, 2025
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38 changes: 32 additions & 6 deletions htmlpreview.js
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Original file line number Diff line number Diff line change
Expand Up @@ -381,16 +381,42 @@
const loadHTML = function (data) {
if (data) {
// Add <base> just after <head>
// and replace <script type="text/javascript">
// with <script type="text/htmlpreview">
data = data.replace(
/<head([^>]*)>/i,
'<head$1><base href="' + rawFileUrl + '">'
).replace(
// eslint-disable-next-line @stylistic/js/max-len
/<script(\s*src=["'][^"']*["'])?(\s*type=["'](text|application)\/javascript["'])?/gi,
'<script type="text/htmlpreview"$1'
);

// Only rewrite <script> tags that are local or from a git forge
data = data.replace(/<script(\s+[^>]*)?>/gi, function (match) {
// Extract src attribute if present
const srcMatch = match.match(/src=["']([^"']+)["']/i);
if (srcMatch) {
let src = srcMatch[1];
let absSrc;
try {
absSrc = new URL(src, rawFileUrl).href;
} catch (e) {
absSrc = src; // fallback, treat as is
}
// Only rewrite if src is a git forge file
if (isGitForgeFileUrl(absSrc)) {
// Remove any existing type attribute
let tag = match.replace(/type=["'][^"']*["']/i, '');
// Add our type
tag = tag.replace('<script', '<script type="text/htmlpreview"');
return tag;
} else {
// Leave external scripts (like CDN or local) untouched
return match;
}
} else {
// Inline scripts: rewrite
let tag = match.replace(/type=["'][^"']*["']/i, '');
tag = tag.replace('<script', '<script type="text/htmlpreview"');
return tag;
}
});

// Delay updating document to have it cleared before
setTimeout(function () {
document.open();
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