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<link rel="preload" href="/a.js" type="application/javascript" class="script-preload"> | |
<link rel="preload" href="/b.js" type="application/javascript" class="script-preload"> | |
<link rel="preload" href="/c.js" type="application/javascript" class="script-preload"> | |
<script> | |
Promise.all( | |
Array.from(document.querySelectorAll('.script-preload')).map(l => l.loaded()) | |
).then(function(links) { | |
links.reduce(function(chain, link) { | |
return chain.then(function() { | |
var script = document.createElement('script'); | |
script.src = link.href; | |
document.head.appendChild(script); | |
}); | |
}, Promise.resolve()); | |
}); | |
</script> |
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