masa141421356 https://blog.hatena.ne.jp/masa141421356/ masa141421356’s blog https://masa141421356.hatenablog.com/ JavaScript IE Q3:何が表示されますか？(IE9以降） <script> window.onerror = function(e) { alert(arguments.callee.caller); }; function a(){} function b(){} function c(){} delete d; </script> <script> a(),b() c(),d() </script> 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmasa141421356.hatenablog.com%2Fentry%2F20150909%2F1441809712" title="クイズの続き - masa141421356’s blog" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2015-09-09 23:41:52 rich https://masa141421356.hatenablog.com/entry/20150909/1441809712 1.0 100%