<ul data-eligibleForWebStory="false"><li>Raj Guru Yadav, a 16-year-old full-stack web developer from India, shared a story about how a single line of JavaScript code wiped out his entire app's data.</li><li>He was working on a student manager dashboard project that stored data in localStorage and accidentally used 'localStorage.clear();' which deleted all the app's data.</li><li>To prevent such accidents, he recommended clearing only session-specific data, adding a backup system, and confirming with the user before clearing data.</li><li>Raj emphasized the importance of testing destructive actions safely, never assuming clear() is harmless, creating backups, and learning from mistakes to become a better developer.</li></ul>

I Lost All My App Data with One Line of Code — Here's What I Learned (Real JS Story)

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