JSDen
A browser-based JavaScript playground for writing and testing code online, in the vein of JSFiddle or CodePen but focused on JavaScript. It is optimized for mobile and tablet devices, so developers can experiment with snippets away from a desktop. Suited to quick prototyping, learning, and trying out language features.
Not sure how to add JSDen to your home screen? Step-by-step for Chrome, Safari, Firefox and Edge — it takes about ten seconds, and there is no app store involved.
Own JSDen? Have us re-run this measurement — we open it in a real browser, cut the network, and send you what survived.
How to install JSDen as a PWA
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Own a PWA? See the listing options — standard submission is free.