I found the linked blog post insightful, but there is plenty of prior discussion.<p>> <i>Canistilluse.com</i> (359 comments)<p><a href="https://news.ycombinator.com/item?id=28309885" rel="nofollow">https://news.ycombinator.com/item?id=28309885</a><p>> <i>Implement window.{alert, prompt, confirm} removal from cross-origin iframes</i> (147 comments)<p><a href="https://news.ycombinator.com/item?id=28055160" rel="nofollow">https://news.ycombinator.com/item?id=28055160</a><p>> <i>Google is considering removing alert()</i> (39 comments)<p><a href="https://news.ycombinator.com/item?id=28064290" rel="nofollow">https://news.ycombinator.com/item?id=28064290</a><p>> <i>Proposed Chromium policy on JavaScript dialogs</i> (2017, 18 comments)<p><a href="https://news.ycombinator.com/item?id=13981579" rel="nofollow">https://news.ycombinator.com/item?id=13981579</a><p>> <i>Google Chrome to remove alert() inside cross-origin iframes in a future version</i> (4 comments)<p><a href="https://news.ycombinator.com/item?id=28070437" rel="nofollow">https://news.ycombinator.com/item?id=28070437</a><p>> <i>Chromium plans to remove alert(), confirm(), prompt()</i> (1 comment)<p><a href="https://news.ycombinator.com/item?id=28003125" rel="nofollow">https://news.ycombinator.com/item?id=28003125</a><p>> <i>Foundations</i> (0 comments)<p><a href="https://news.ycombinator.com/item?id=28088791" rel="nofollow">https://news.ycombinator.com/item?id=28088791</a><p>> <i>Choice Words about the Upcoming Deprecation of JavaScript Dialogs</i> (0 comments)<p><a href="https://news.ycombinator.com/item?id=28129579" rel="nofollow">https://news.ycombinator.com/item?id=28129579</a><p><a href="https://news.ycombinator.com/item?id=28311776" rel="nofollow">https://news.ycombinator.com/item?id=28311776</a><p>> <i>Slow path to deprecate and remove window.alert/confirm/prompt</i> (0 comments)<p><a href="https://news.ycombinator.com/item?id=28071267" rel="nofollow">https://news.ycombinator.com/item?id=28071267</a><p>> <i>Chrome plans to Dismiss JavaScript dialogs on switch-away</i> (2017, 0 comments)<p><a href="https://news.ycombinator.com/item?id=13995506" rel="nofollow">https://news.ycombinator.com/item?id=13995506</a>