Set a Timed Debugger To Web Inspect Hard-To-Grab Elements
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Triggering a debugger; statement at just the right moment can help you select a DOM element that is really hard (or impossible) to get selected in DevTools. You can do that directly in your code, or, through a setTimeout right in the console, so you can get the DOM just how you want it right before it's frozen.

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Related Topics: CSS Firefox