HIGH-PERFORMANCE JAVASCRIPT BY NICHOLAS ZAKAS PDF

Hit me up! Zakas just announced his new book High Performance JavaScript , which you should order today. Define local variables When a variable is referenced, Javascript hunts it down by looping through the different members of the scope chain. This scope chain is the set of variables available within the current scope, and across all major browsers it has at least two items: a set of local variables and a set of global variables.

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You want desperately to ace the final exam, so you reach out for some help. Then It hits you like a bolt from the blue -- every bit of it resonates with you. The inner machinations of the language snap together in a way that makes it all feel new and exciting -- the possibilities are boundless! You go back over your notes. You were close -- oh so close -- the whole time. But the last little bits drop in.

A refinement here, a re-factor there Put scripts at the bottom of the document? Minify and compress? Concatenate and package? So on the one hand you say: "I guess I can sleep a little easier at night knowing that our build system adheres to the best practices recommended by the experts out there. Again: not that this makes it without merit. I unfortunately waited too long to read it. As the foreword notes at the time the book was written the browser landscape was drastically different than it is as we start Certain chapters still hold relevant nuggets of advice but overall this book is no longer a must read, in particular all of the browser benchmarks need to be rerun on modern browsers.

DOM Scripting advice still holds true and is a driver behind libraries like React. Most of Algorithms and Flow Control and Strings and Regular Expressions is still relevant, especially issues with backtracking. Responsive Interfaces and Programming Practices have some good ideas.

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