No matter how much experience you have with JavaScript, you don't fully understand the language. Part of the "You Don't Know JS" series, this compact guide delves deeper into JavaScript types than previous treatments by looking at type enforcing issues, showing why types work, and showing you how to take advantage of these properties.Like the other books in this series, You Don't Know JS: Types and Grammar dives into the trickier parts of the language (like types) that many JavaScript programmers simply avoid or assume don't exist. Armed with this knowledge, you can achieve true JavaScript mastery.With this book you will:Meet the seven types of JavaScript: null, undefined, boolean, number, string, object and symbolUnderstand why JavaSript's unique array, array, and number properties may please or surprise youLearn how natives provide object wrappers around primitive valuesDive into the enforcement discussion and find out why this feature is useful in many situationsExplore the various nuances of JavaScript syntax involving expressions, expressions, and more