So you know jQuery. Now what?
summary
jQuery remains a fast route to interactivity but most of its common jobs are now native: use querySelectorAll for DOM selection, classList and dataset for classes and data, XHR2 with FormData and progress for uploads, and requestAnimationFrame or CSS animations for smooth motion. Include jQuery only when browsers “can’t cut the mustard,” budgets demand rapid prototyping, or app complexity makes rewriting costly; otherwise a tiny ~200‑byte helper or Zepto replaces it and the site becomes noticeably lighter and faster.
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chapters (4)
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