Developer Publishes Comprehensive Frontend JavaScript Utilities Guide for Interview Prep

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A developer on DEV Community has published a detailed reference guide covering frontend JavaScript utility functions built entirely from scratch. The guide spans 13 levels of complexity, ranging from language fundamentals and object manipulation to rate limiting, async JavaScript, and DOM problems. Each utility includes theory, heavily commented implementation code, time and space complexity analysis, edge cases, and common interview follow-up variations. The resource also includes a 30-day practice plan and a section dedicated to Google frontend machine coding challenges. It is designed to help developers not only write working solutions but also articulate assumptions and edge cases clearly during technical interviews.

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