{ "item_title" : "Understanding Ecmascript 6", "item_author" : [" Nicholas C. Zakas "], "item_description" : "ECMAScript 6 represents the biggest update to the core of JavaScript in the history of the language. In Understanding ECMAScript 6, expert developer Nicholas C. Zakas provides a complete guide to the object types, syntax, and other exciting changes that ECMAScript 6 brings to JavaScript. Every chapter is packed with example code that works in any JavaScript environment so you'll be able to see new features in action. You'll learn:-How ECMAScript 6 class syntax relates to more familiar JavaScript concepts-What makes iterators and generators useful-How arrow functions differ from regular functions-Ways to store data with sets, maps, and more-The power of inheritance-How to improve asynchronous programming with promises-How modules change the way you organize code Whether you're a web developer or a Node.js developer, you'll find Understanding ECMAScript 6 indispensable on your journey from ECMAScript 5 to ECMAScript 6.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/59/327/757/1593277571_b.jpg", "price_data" : { "retail_price" : "34.95", "online_price" : "34.95", "our_price" : "34.95", "club_price" : "34.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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