Amazonリンクを短く。prime videoにも対応。
javascript: (function () { w = window; t = location.href; p = t.match(/(\/dp\/|\/ASIN\/|\/product\/)([a-zA-Z0-9]+)[\/\?]?/); if (p == null) { p = t.match(/(\/detail\/)([a-zA-Z0-9]+)\//); if (p == null){ alert('no dp, ASIN or product'); return; } } x = w.prompt('URL ','http://www.amazon.co.jp/dp/'+p[2]); if (x =='' || x == null) { return; } w.location.href = x; } ())