Stay alert

A short while ago, Chrome broke the web by disabling alert(), confirm() and prompt() dialogs from cross-origin iframes. The justification was that "the current UX is confusing, and has previously led to spoofs where sites pretend the message comes from Chrome or a different website"; removing the feature was deemed preferable to fixing the UX. But legitimate uses were affected too. Users of CodePe

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Chromeのalert,confirm,prompの削除について。