Zarel

The Wat talk has been floating around for a long time:

https://www.destroyallsoftware.com/talks/wat

There are probably lots of articles explaining exactly what's going on in this video, but I'll add this to the mix, since JavaScript typecasting is actually a lot simpler than most people think.

Useful background knowledge

To understand typecasting in JavaScript, you actually only need to know three rules:

Zarel

input = $('textarea')[0].value;

// remove existing gen 6 data

for (var speciesid in BattleLearnsets) {
	if (!BattleLearnsets[speciesid] || !BattleLearnsets[speciesid].learnset) continue;
	var learnset = BattleLearnsets[speciesid].learnset;
	for (var moveid in learnset) {
		var sources = learnset[moveid];
		for (var i=sources.length-1; i>=0; i--) {