[B! es6] tasanobuã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

tasanobu id:tasanobu

es6ã«é–¢ã™ã‚‹tasanobuã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (13)

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Symbolã«ã¤ã„ã¦ - JS.next
æ¦‚è¦ ES2015ã§ã¯Undefinedã€Nullã€Booleanã€Numberã€Stringã€Objectã®ï¼–ã¤ã®åž‹ã«åŠ ãˆã¦ã€æ–°ã—ã„åž‹SymbolãŒå°Žå…¥ã•ã‚ŒãŸã€‚ ã‚·ãƒ³ãƒœãƒ«ã¯ãƒ—ãƒªãƒŸãƒ†ã‚£ãƒ–åž‹ã§ã€æ–‡å—åˆ—ã®ã‚ˆã†ã«ãƒ—ãƒãƒ‘ãƒ†ã‚£ã®ã‚ãƒ¼ã¨ã—ã¦ä½¿ãˆã‚‹ç‰¹å¾´ã‚’æŒã¤ã€‚ æŒ¯ã‚‹èˆžã„ ã‚·ãƒ³ãƒœãƒ«ã¯Symbolã‚³ãƒ³ã‚¹ãƒˆãƒ©ã‚¯ã‚¿ã‚’å‘¼ã¶ã“ã¨ã§ä½œã‚‰ã‚Œã€ãã®æ™‚ã«å¼•æ•°ã¨ã—ã¦æ–‡å—åˆ—ã‚’æ¸¡ã›ã°åå‰ã‚’æŒãŸã›ã‚‹ã“ã¨ãŒã§ãã‚‹ã€‚ sym1 = Symbol() sym2 = Symbol('name') typeofæ¼”ç®—åã§è©•ä¾¡ã™ã‚‹ã¨"symbol"ãŒè¿”ã•ã‚Œã‚‹ã€‚ typeof sym1 // "symbol" Symbolã‚³ãƒ³ã‚¹ãƒˆãƒ©ã‚¯ã‚¿ã‚’newä»˜ãã§å‘¼ã³å‡ºã™ã“ã¨ã¯å‡ºæ¥ãªã„ãŒã€ã‚·ãƒ³ãƒœãƒ«ã‚’Objectã‚³ãƒ³ã‚¹ãƒˆãƒ©ã‚¯ã‚¿ã«æ¸¡ã™ã“ã¨ã§ãƒ©ãƒƒãƒ—ã™ã‚‹ã“ã¨ã¯ã§ãã‚‹ã€‚ new Symbol() // TypeError symobj = Object(sym2) ty
tasanobu 2016/04/21
es6

javascript

es2015

symbol
ãƒªãƒ³ã‚¯
Mocha + Chai.js unit testing for ES6 with Istanbul code coverage
Testing is very important for finding bugs, verifying the functionality and improving the general stability of a piece of software. Almost all (if not all) developers test their code in some way. One way to test would be to manually run the program and try out all the functions to see if everything is working as expected. Another (and better) way is to write automated tests that are run every time
tasanobu 2016/04/19
es6

node.js

mocha

npm

babel
ãƒªãƒ³ã‚¯
JavaScript Promises - Thinking Sync in an Async World
Presented at the STL Ember.js Meetup on 2014-02-06. Video: http://youtu.be/wc72cyYt8-c
tasanobu 2016/04/18
es6

es2015

promise
ãƒªãƒ³ã‚¯
JavaScriptã®Promiseã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã«ã¤ã„ã¦èª¿ã¹ãŸäº‹ | QUARTETCOM TECH BLOG
JavaScriptã®Promiseã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã«ã¤ã„ã¦èª¿ã¹ãŸäº‹ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ ç›®æ¬¡ åŒæœŸå‡¦ç†ã¨éžåŒæœŸå‡¦ç† Promiseã¨ã¯ä½•ã‹ ES6 Promiseã®ã‚³ãƒ³ã‚¹ãƒˆãƒ©ã‚¯ã‚¿é–¢æ•° ã‚³ãƒ³ã‚¹ãƒˆãƒ©ã‚¯ã‚¿ã«æ¸¡ã—ãŸé–¢æ•°å†…ã§ç™ºç”Ÿã—ãŸã‚¨ãƒ©ãƒ¼ Thenable Static Method ä¸¦åˆ—å‡¦ç† é€æ¬¡å‡¦ç† ã‚¢ãƒ³ãƒãƒ‘ã‚¿ãƒ¼ãƒ³ Jasmineã«ã‚ˆã‚‹Promiseã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ãƒ†ã‚¹ãƒˆ Promiseã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã€ŒQã€ã®ç´¹ä»‹ Deferred AngularJSã®$q ã²ã¨ã“ã¨ ç§ãŒæ•¢ãˆã¦æ›¸ã‹ãšã¨ã‚‚Promise/Deferredã«ã¤ã„ã¦ã®è§£èª¬ã‚µã‚¤ãƒˆã¯æº¢ã‚Œã‚‹ã»ã©å˜åœ¨ã—ã¾ã™ã€‚ãªãœãã“ã«é‡ãã‚‹ã‚ˆã†ã«åŒã˜è¨˜äº‹ã‚’æ›¸ã„ãŸã®ã‹ï¼Ÿ 1ãƒ¶æœˆã»ã©å‰ã®ç§ã®æ„è˜ã¯ã€ŒPromiseã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆï¼Ÿã‚ãƒ¼ã€then()ã¦å‘¼ã¶ã‚„ã¤ãã€ã¨ã„ã†ç¨‹åº¦ã§ã—ãŸã€‚ã‚ˆãçŸ¥ã‚‰ãšã«ä½¿ã£ã¦ã„ã‚‹ã¨ã‚¢ãƒ³ãƒãƒ‘ã‚¿ãƒ¼ãƒ³ã«å‡ºã¦ããŸã‚ˆã†ãªä½¿ã„æ–¹ã‚’ã—ã¦ã„ã‚‹ã¨ã“ã‚ã‚‚å¤šã€…ã‚ã‚Šã€
tasanobu 2016/04/17
es6

promise
ãƒªãƒ³ã‚¯
Learn ES2015 Â· Babel
This document was originally taken from Luke Hoban's excellent es6features repo. Go give it a star on GitHub! Introductionâ€‹ ECMAScript 2015 is an ECMAScript standard that was ratified in June 2015. ES2015 is a significant update to the language, and the first major update to the language since ES5 was standardized in 2009. Implementation of these features in major JavaScript engines is underway no
tasanobu 2016/04/07
es2015

es6

javascript

babel
ãƒªãƒ³ã‚¯
ECMAScript 2015 Language Specification â€“ ECMA-262 6th Edition
Standard ECMA-262 6th Edition / June 2015 ECMAScriptÂ® 2015 Language Specification This is the HTML rendering of ECMA-262 6th Edition, The ECMAScript 2015 Language Specification. The PDF rendering of this document is located at https://ecma-international.org/wp-content/uploads/ECMA-262_6th_edition_june_2015.pdf. The PDF version is the definitive specification. Any discrepancies between this HTML ve
tasanobu 2016/04/07
es6

es2015

javascript
ãƒªãƒ³ã‚¯
Native Support for Promises in Node.js
Is there native support for promises in current versions of Node.js? Node.js uses the V8 engine. This JavaScript engine is also used by Chrome, and Chrome 32 has native support for promises. But I can't seem to get promises to work (natively) in Node.js. I've tried the following code in Chrome 32 and it works. var promise = new Promise(function(resolve, reject) { // do a thing, possibly async, the
tasanobu 2016/03/31
vscode

es6

promise
ãƒªãƒ³ã‚¯
Node.js â€” ECMAScript 2015 (ES6) and beyond
How much JavaScript do you need to know to use Node.js?
tasanobu 2016/03/29
es6

js

javascript

es2015
ãƒªãƒ³ã‚¯
You-Dont-Know-JS/es6 & beyond at master Â· getify/You-Dont-Know-JS Â· GitHub
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tasanobu 2016/03/29
es6

es2015

javascript
ãƒªãƒ³ã‚¯
GitHub - airbnb/javascript: JavaScript Style Guide
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tasanobu 2016/03/27
es6

javascript
ãƒªãƒ³ã‚¯
coding-styles/es6.md at master Â· elierotenberg/coding-styles
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tasanobu 2016/03/27
es6
ãƒªãƒ³ã‚¯
JavaScript Design Patterns by joshbedo
tasanobu 2016/03/27
es6
ãƒªãƒ³ã‚¯
JavaScript Promiseã®æœ¬
ã“ã®æ›¸ç±ã¯Creative Commons Attribution-NonCommercialã® ãƒ©ã‚¤ã‚»ãƒ³ã‚¹ ã§å…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ ã¾ãŸã€PDFã¨ã—ã¦ãƒ¬ãƒ³ãƒ€ãƒªãƒ³ã‚°ã—ãŸãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯ä»¥ä¸‹ã‹ã‚‰ãƒ€ã‚¦ãƒ³ãƒãƒ¼ãƒ‰ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚
tasanobu 2016/02/10
javascript

js

es6

promise
ãƒªãƒ³ã‚¯
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