Load multiple scripts into an HTML page.
Any script can also have multiple alternative sources - in case one fails, it can load from another source. Optional callback function is executed when all scripts finished loading.
multiloader(
// these are alternative versions, only one of them loads:
['https://a.com/my1.js', 'https://b.com/my1.js', 'https://c.com/my1.js'],
// this loads second:
'https://a.com/my2.js',
// this loads third, 3 alternative versions, only one of them loads:
['https://a.com/my3.js', 'https://b.com/my3.js', 'https://c.com/my3.js'],
// ... can load more
() => console.log('All Loaded!') //optional
) // minimal, just load one script, the same as just:
// <script src="https://example.com/script.js"></script>
multiloader('https://example.com/script.js') // load one script, with one alternative source
multiloader(['https://example1.com/script.js', 'https://example2.com/script.js'])