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You Don't Know JS: ES6 & Beyond"font style: normal; font variant: normal; font weight: normal; letter spacing: normal; line height: 15px; orphans: auto; text align: justify; text indent: 0px; text transform: none; white space: normal; widows: 1; word spacing: 0px; webkit text stroke width: 0px; color: rgb(51, 51, 51); font family: Arial, Verdana, Geneva, Helvetica, sans serif; font size: 12px; background color: rgb(255, 255, 255);"No matter how much experience you have with
"font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 15px; orphans: auto; text-align: justify; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; color: rgb(51, 51, 51); font-family: Arial, Verdana, Geneva, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"No matter how much experience you have with JavaScript, odds are you dont fully understand the language. As part of the "You Dont Know JS" series, this compact guide focuses on new features available in ECMAScript 6 (ES6), the latest version of the standard upon which JavaScript is built."font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 15px; orphans: auto; text-align: justify; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; color: rgb(51, 51, 51); font-family: Arial, Verdana, Geneva, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"Like other books in this series, You Dont Know JS: ES6 & Beyond dives into trickier parts of the language that many JavaScript programmers either avoid or know nothing about. Armed with this knowledge, you can achieve true JavaScript mastery."font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 15px; orphans: auto; text-align: justify; text-indent: 0px; text-transform: none; white-space: normal; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px; color: rgb(51, 51, 51); font-family: Arial, Verdana, Geneva, Helvetica, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"With this book, you will: Learn new ES6 syntax that eases the pain points of common programming idioms Organize code with iterators, generators, modules, and classes Express async flow control with Promises combined with generators Use collections to work more efficiently with data in structured ways Leverage new API helpers, including Array, Object, Math, Number, and String Extend your programs capabilities through meta programming Preview features likely coming to JS beyond ES6Shipping Notes
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4.0 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Great value for a one-time event! Perfect for graduation.
Color: Black, Size: Large, Color: Black, Size: Large
I bought this suit for my son's graduation, and it was exactly what we needed. Since he will probably only wear it once, I didn't want to spend a fortune at a high-end department store. For the price, the quality is surprisingly good; it looked sharp and he received a lot of compliments during the ceremony. We ordered a size Large (L) based on their sizing chart, and it was true to size and fit him perfectly. The fabric is lightweight but doesn't look cheap at all, making this a fantastic, excellent cost-benefit choice if you are looking for an option for a one-time event. Highly recommended!
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Great for the price.
Color: Black, Size: Large, Color: Black, Size: Large
I’m 220lbs 6’1 athletic build. Arms/back couldn’t fit inside the jacket. Pants and vest fit fine though. I honestly should get stuff tailored considering my body competition. Good quality for the price worked for me.
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Reviewed in the United States on April 27, 2026
★★★★★ 4
XL sized suit review
Color: Light Blue, Size: X-Large
I ordered XL for my husband who is 6'1" and weighs 200 lbs. The pants' length was too long and we had to cut off two inches and get them hemmed. Jacket could be a little bigger in the mid section and shoulders but vest fit well. Could do without the fake handkerchief in the suit jacket pocket. Still liked the style and the color of the light blue suit.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Perfect for teens
Color: Black, Size: XX-Large
Great suit! Great quality for the price. Very impressed. Bought for my teens. Didn't want to spend a lot on something they won't wear more than a couple times before they grow again. This suit is great. A tad long in the arms and legs. But overall, its perfect. Fitting suit, but got a size larger for their comfort. Surprised at the quality, my mom was impressed and she knows suits.
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Reviewed in the United States on March 29, 2026
★★★★★ 5
Great suit!
Color: Black, Size: Medium
Looks super nice! For the price, it is definitely worth it. The fabric looks and feels great and the size range is good.
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Reviewed in the United States on May 9, 2026