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October 1, 2017 23:05
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Save usefulthink/d86fb057c26f93ebab7294f10e0ef43e to your computer and use it in GitHub Desktop.
opens any three.js example in codepen to play around with it.
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function extractScriptContent(root) { | |
return Array.from(root.querySelectorAll('script:not([src])')) | |
.filter(el => !el.type || el.type.endsWith('javascript')) | |
.reduce((result, el) => { | |
el.parentNode.removeChild(el); | |
return result + el.textContent; | |
}, ''); | |
} | |
function extractCssContent(root) { | |
return Array.from(root.querySelectorAll('style')).reduce((result, el) => { | |
el.parentNode.removeChild(el); | |
return result + el.textContent; | |
}, ''); | |
} | |
function normalizeUrls(documentText) { | |
const normalizeUrl = (() => { | |
const urlHelper = document.createElement('a'); | |
return url => { | |
urlHelper.href = url; | |
return urlHelper.toString(); | |
}; | |
})(); | |
return documentText | |
.replace( | |
/(href|src)=(?:"([^"]*)"|'([^']*)')/g, | |
($0, attrName, dqValue, sqValue) => | |
`${attrName}="${normalizeUrl(sqValue || dqValue)}"` | |
) | |
.replace( | |
/(\.\s*load\s*\(\s*')([^']*)(')/g, | |
($0, prefix, url, suffix) => prefix + normalizeUrl(url) + suffix | |
); | |
} | |
async function loadExampleHtml() { | |
let url = ''; | |
if (document.location.pathname === '/examples/') { | |
url = document.location.hash.slice(1) + '.html'; | |
} | |
return (await fetch(url)).text(); | |
} | |
async function main() { | |
const text = await loadExampleHtml(); | |
const parser = new DOMParser(); | |
const doc = parser.parseFromString(normalizeUrls(text), 'text/html'); | |
const js = extractScriptContent(doc); | |
const css = extractCssContent(doc); | |
const html = doc.body.innerHTML; | |
const form = document.createElement('form'); | |
const input = document.createElement('input'); | |
input.type = 'hidden'; | |
input.name = 'data'; | |
input.value = JSON.stringify({html, css, js}); | |
form.appendChild(input); | |
form.method = 'POST'; | |
form.action = 'https://codepen.io/pen/define'; | |
document.body.appendChild(form); | |
form.submit(); | |
} | |
main().catch(err => console.error(err)); |
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