(JavaScript was once "the most misunderstood language in the world" because it carries too many features, including funny interaction and failed design. However, with the emergence of Ajax, JavaScript "evolved from the most misunderstood programming language to the most popular language". In addition to luck, it also proves that it is actually a good language. In this book, Douglas Crockford stripped away the stains of foreign friends on JavaScript and extracted a subset of JavaScript with higher reliability, readability and maintainability. It allows you to present the real essence of the language from syntax, objects, functions, inheritance, arrays, regular expressions, methods, styles and beautiful features. Through it, you can build elegant and efficient code. The author also lists the relaxation and weak parts of the language through the appendix and tells you how to avoid them. Finally, jslint is introduced. Through its check in, it can effectively protect the quality of our code.This is an authoritative book on the essence of JavaScript language, which is worth reading by anyone who is developing or planning to develop JavaScript. It needs to be read over and over again. Only by learning, understanding and practicing the master's thoughts can we stand on the shoulders of giants and have the opportunity to surpass the master. This book is the beginning.)
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