The first major update in nearly 10 years, jQuery 4.0.0 follows a long development cycle and several pre-releases.

移除旧版浏览器支持：不再支持 IE 11 以下版本（即仅支持 IE11+），同时也放弃了对 Edge Legacy、iOS <11、Firefox <65 和旧版 Android 浏览器的支持。

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A curated collection of programming practice problems and algorithm/data-structure implementations in C, C++, Java, Python, and web (HTML/CSS/JS), covering trees, graphs, dynamic programming, ...