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ginpei id:ginpei

ES6ã«é–¢ã™ã‚‹ginpeiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (16)

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Object.freeze / Object.seal ã®ç³–è¡£æ§‹æ–‡ - æŠ€è¡“æŽ¢ã—
ã‚‚ã¨ã‚‚ã¨ã®ç™ºç«¯ã¯ã“ã“ã‹ã‚‰ã€‚ Fishrock123/proposal-const-function-arguments: A proposal to introduce constant function argument references.: https://t.co/rMvEtdYrrgâ€” hiroppyðŸ˜¶ (@about_hiroppy) 2017å¹´11æœˆ26æ—¥ æ˜Žç¤ºçš„ã«constã‹ã©ã†ã‹ã‚’ç¤ºã™ãƒ—ãƒãƒãƒ¼ã‚¶ãƒ«ã§ã¾ã ãƒãƒ£ãƒ³ãƒ”ã‚ªãƒ³ã¯å–å¾—ã—ã¦ãªã„ã€‚ æ°—ä»˜ã„ãŸã‚‰ Brian Terlson(ç¾åœ¨ã®TC39ã®ã‚¨ãƒ‡ã‚£ã‚¿) Jordan Harband(Airbnbã®TC39ã®ä¼šå“¡) Mikeal Rogers(Node.js Foundationã®è¨ç«‹è€…) Bradley Farias(TC39ã®ä¼šå“¡ã§ESMã«ä¸€ç•ªãã‚ã—ã„äºº) Benedikt Meurer(V8ãƒãƒ¼ãƒ ã®ã‚¹ã‚´ã‚¤äºº) Ingv
ginpei 2017/12/05
JavaScriptã§ `const obj` ã§å¤‰æ•°ä½œã£ã¦ã‚‚ãã®ä¸èº« `obj.foo` ã¯å¤‰æ›´ã§ãã‚‹ã‘ã©ã€ãã‚Œã‚’åˆ¶å¾¡ã™ã‚‹ç¾è¡Œä»•æ§˜ã®ã€ç³–è¡£æ§‹æ–‡æ¡ˆã€‚ä¸æ€è°è¨˜å·ãŒå¢—ãˆã‚‹ã‹ã‚‚ã—ã‚Œãªã„ã€‚

javascript

ES6

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Some ECMAScript Explanations and Stories for Dave
Dave Winer recently blogged about his initial thoughts after dipping his toes into using some modern JavaScript features . He ends by suggesting that I might have someÂ explanations and stories about the features he are using.Â Iâ€™ve given talks that cover some of this and normally I might just respond via some terse tweets. But Dave believes that blog posts should be responded to by blog posts so
ginpei 2017/11/23
ECMAScriptä»•æ§˜ç·¨è€…ã«ã‚ˆã‚‹ã€ES6ã§ã¯ãªãES2015ã¨å‘¼ã¶ã¹ãç†ç”±ã«ã¤ã„ã¦ã€‚æ¯Žå¹´æ›´æ–°ã™ã‚‹ã“ã¨ã«ã—ãŸã®ã§ã€é€£ç•ªã ã¨ã‚ã‹ã‚Šã¥ã‚‰ã„ãŸã‚ã€‚æ£å¼åç§°ã«ã¯æ®‹ã‚‹ãŒã€å¹´ã®æ–¹ã‚‚é¡Œã«å«ã‚ã‚‹ã‚ˆã†ã«ã—ãŸã€‚

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ES6

javascript
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ãªãœTypeScriptæŽ¨ã—ãªã®ã‹ - Islands in the byte stream
Kibelaã®ãƒ•ãƒãƒ³ãƒˆã‚¨ãƒ³ãƒ‰ã‚’ES2015ã‹ã‚‰TypeScriptã«çµ¶è³›ç§»è¡Œä¸ã§ã™ã€‚ www.typescriptlang.org ã§ã€ãªãœ flow ã˜ã‚ƒãªã„ãã¦TSãªã®ã‹ã£ã¦è©±ã§ã™ã€‚ flow vs typescriptã§ã‚ã‚‹ç†ç”±ã¯ã€ã©ã¡ã‚‰ã‚‚JSã®ã‚¹ãƒ¼ãƒ‘ãƒ¼ã‚»ãƒƒãƒˆã‚’ã†ãŸã†é™çš„åž‹ä»˜ãã®altJSã ã‹ã‚‰ã§ã™ã€‚ã“ã®æ™‚ä»£ã«ã‚ãˆã¦altJSã‚’å°Žå…¥ã™ã‚‹ç†ç”±ã¨ã—ã¦ã¯é™çš„åž‹ãŒã‚ã‚‹ã¨ã„ã†ã®ãŒå¿…é ˆã§ã€ã‹ã¤å¦ç¿’ã‚³ã‚¹ãƒˆã‚’è€ƒãˆã‚‹ã¨JSã®ã‚¹ãƒ¼ãƒ‘ãƒ¼ã‚»ãƒƒãƒˆã§ã‚ã‚‹ã®ãŒæœ›ã¾ã—ã„ã§ã—ã‚‡ã†ã€‚ è¨€èªžä»•æ§˜ è¨€èªžä»•æ§˜ã®ç‚¹ã‹ã‚‰è¨€ã†ã¨ã€æ±ºå®šçš„ãªå·®ã¯ãªã„ã¨æ€ã£ã¦ã„ã¾ã™ã€‚ ãƒ¡ãƒªãƒƒãƒˆã‚‚ã ã„ãŸã„åŒã˜ã§ ç”Ÿç”£æ€§: ã‚¨ãƒ‡ã‚£ã‚¿ã®è£œå®Œã‚’JSã‚ˆã‚Šã‚‚è³¢ãã§ãã‚‹ã®ã§ã€ã‚ˆã‚Šå°‘ãªã„è„³ã®ãƒ¯ãƒ¼ã‚ãƒ³ã‚°ãƒ¡ãƒ¢ãƒªã§ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ã‘ã‚‹ å …ç‰¢æ€§: ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ã«ï¼ˆï¼å¤šãã®ã‚±ãƒ¼ã‚¹ã§ã¯ã‚¨ãƒ‡ã‚£ã‚¿ã§ï¼‰typoãªã©ã®é–“é•ã„ã‚’æ¤œå‡ºã§ãã‚‹ã®ã§ãƒã‚°ã‚’æ¸›ã‚‰ã›ã‚‹ å¦ç¿’ã‚³ã‚¹ãƒˆ: JSã‚’ãƒ™ãƒ¼ã‚¹ã«ã—ã¦ãŠã‚Šã€
ginpei 2017/05/25
ES+flowã‚ˆã‚ŠTypeScriptã®æ–¹ãŒè‰¯ã„ãžã¨ã„ã†è©±ã€‚æ‹¡å¼µåã‚’æ··åŒã—ãªã„ã¨ã‹ã€ãƒãƒƒãƒˆã§æ¤œç´¢ã—ã‚„ã™ã„ã¨ã‹ã€‚

javascript

ES6
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ECMAScript6ã«ã‚·ãƒ³ãƒœãƒ«ãŒã§ããŸç†ç”±
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? ECMAScript6 (ES6, ES2015) ã§å°Žå…¥ã•ã‚ŒãŸæ–°æ©Ÿèƒ½ã®å¤§åŠã¯ã€èªã‚ã°ä¾¿åˆ©ã•ãŒæƒ³åƒãã‚‰ã„ã¯ã§ãã‚‹ã‘ã©ã€è‡ªåˆ†ã«ã¨ã£ã¦ã—ã°ã‚‰ãè¨³ãŒã‚ã‹ã‚‰ãªã‹ã£ãŸæ–°æ©Ÿèƒ½ãŒã€Œã‚·ãƒ³ãƒœãƒ«ã€ï¼ˆMDNã®ãƒªãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ï¼‰ã€‚ã“ã‚Œã¾ã§æ–‡å—åˆ—ã ã‘ã§ä¸Šæ‰‹ãã‚„ã£ã¦ããŸJavaScriptã«ã€æ€¥ã«ãªãœã“ã‚“ãªã‚‚ã®ãŒå°Žå…¥ã•ã‚ŒãŸã®ï¼Ÿã€€ã‚¤ãƒžã‚¤ãƒåˆ†ã‹ã‚‰ãªã‹ã£ãŸã®ã§ã€èª¿ã¹ãŸã“ã¨ã®ã¾ã¨ã‚ã€‚ ã‚·ãƒ³ãƒœãƒ«ã®ç°¡å˜ãªãŠã•ã‚‰ã„ çŸ¥ã£ã¦ã‚‹äººã¯èªã¿é£›ã°ã—æŽ¨å¥¨ã€‚è©³ã—ãè¦‹ãŸã„äººã¯ã€ã“ã“ã¨ã‹ã®ä»–ã®ãƒšãƒ¼ã‚¸ã‚’å‚ç…§ã€‚ ES6ã§å°Žå…¥ã•ã‚ŒãŸã€ Symbol() ã§ä½œæˆã§ãã‚‹ç‰¹æ®Šãªå€¤ã€‚ Symbol() ã¯ã€ ty
ginpei 2017/02/25
javascript

ES6
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Six nifty ES6 tricks
In this blog post, I show six tricks enabled by new ES6 features. At the end of each section, I point to related material in my book â€œExploring ES6â€ (which is free to read online). Enforcing mandatory parameters via parameter default valuesÂ Â # ES6 parameter default values are only evaluated when they are actually used. That lets you enforce that a given parameter be provided: /** * Called if a par
ginpei 2017/01/02
ES6ã®å°æŠ€ãŒ6å€‹ã€‚

javascript

ES6

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You Don't Know ES Modules
ES Modulesä»•æ§˜ã¨å®Ÿè£…ã®ç¾çŠ¶ã‚’ã²ã¨ã¨ãŠã‚Šç´¹ä»‹ Nodeå¦åœ’ 21æ™‚é™ç›® -ES Modules Meetup- http://nodejs.connpass.com/event/34104/Read less
ginpei 2016/07/06
JSãƒ•ã‚¡ã‚¤ãƒ«ã‚’ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¨ã—ã¦åˆ†å‰²ç®¡ç†ã™ã‚‹ES Modulesã®ç¾åœ¨ã«ã¤ã„ã¦ã€‚ã¾ã ä½¿ç”¨ç–å®šä¸ã€‚

javascript

ES6

Node.js
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http://es6-features.org/
ginpei 2015/04/06
ES 6ã§æ–°ã—ã„æ›¸ãæ–¹ãŒã§ãã‚‹ã‚‚ã®ã®ä¾‹ã€‚ES 5ã®æ›¸ãæ–¹ã¨æ¯”è¼ƒã€‚

JavaScript

ES6
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ECMAScriptæ²¡proposalè¿½æ‚¼å¼
4. â— id: tyage â— äº¬å¤§å·¥å¦éƒ¨æƒ…å ±å¦ç§‘3å›ž â— JavaScriptã¨ã‹æ›¸ã„ã¦ã‚‹ â— è¶£å‘³ â—‹ è„†å¼±æ€§å ±å‘Š â—‹ CTF å¸ä¼šæ‹…å½“
ginpei 2015/03/16
æœ€è¿‘ã®ECMAScriptã®æ²¡æ¡ˆé›†ã€‚å¤§å¤‰é¢ç™½ã„ã€‚`typeof null`ã¯æ¡ˆã®å®šã§ã‚ã‚‹ã€‚

ES6

javascript
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Valid JavaScript variable names in ECMAScript 6 Â· Mathias Bynens
ES2015 updates the grammar for identifiers. This affects a number of things, but most importantly, identifiers can be used as variable names, and identifier names are valid unquoted property names. This post describes the observable changes compared to the old ES5 behavior. Reserved words ES2015 reserves the await keyword in module contexts for use in the future. // Valid in ES5, but invalid in an
ginpei 2015/03/10
ES6ã§ä½¿ãˆãªããªã‚‹å¤‰æ•°åã®è©±ã€‚ã¾ã‚åŸºæœ¬çš„ã«ã¯æ™®é€šã®åå‰ãªã‚‰å•é¡Œãªã„ã€‚

ES6

javascript

web
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GitHub - js-experiments/es6-project: es6 discovery
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ginpei 2014/07/09
ES6ã‚’ãƒ•ãƒ«æ´»ç”¨ã—ãŸNode.jsã‚¢ãƒ—ãƒªã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã€ã®äºˆå®šåœ°ã ã¨æ€ã†ã€‚è‘—è€…ãƒ–ãƒã‚°ã§é€£è¼‰ä¸ã€‚

Node.js

ES6

javascript
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http://es6rocks.com/
ginpei 2014/07/08
æœªæ¥JavaScriptã€ES6ã«ã¤ã„ã¦ã®ã‚µã‚¤ãƒˆã€‚ä»Šã®ã¨ã“ã‚ã‚¹ãƒ©ã‚¤ãƒ‰ç´¹ä»‹ã®ãƒ–ãƒã‚°è¨˜äº‹ãŒä¸»ã€‚ä»Šå¾Œã‚µãƒ³ãƒ—ãƒ«ã¨ã‹å¢—ãˆã‚‹ã‚“ã ã‚ã†ã‹ã€‚

javascript

ES6
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Handling required parameters in ECMAScript 6
In ECMAScript 5, you have a few options for ensuring that a required parameter has been provided, all of which are somewhat brittle and inelegant: function foo(mustBeProvided) { if (arguments.length < 1) throw new Error(...) if (! (0 in arguments)) ... if (mustBeProvided === undefined) ... } In ECMAScript 6, you can (ab)use default parameter values to achieve more concise code (credit: idea by All
ginpei 2014/04/24
æ¬¡ä¸–ä»£JavaScriptã§ã€å‰²ã¨ç°¡æ½”ã«å¿…é ˆã®å¼•æ•°ã‚’æŒ‡å®šã™ã‚‹æ–¹æ³•ã€‚åˆæœŸå€¤ã¨ã—ã¦ã€å¸¸ã«ä¾‹å¤–ã‚’æŠ•ã’ã‚‹é–¢æ•°ã®å®Ÿè¡Œã‚’æŒ‡å®šã™ã‚‹ã¨ã€æœªæŒ‡å®šæ™‚ã«ãã‚ŒãŒè©•ä¾¡ã•ã‚Œã€ã‚¨ãƒ©ãƒ¼ã«ãªã‚‹ã€‚

ES6

javascript
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GitHub - lukehoban/es6features: Overview of ECMAScript 6 features
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ginpei 2014/03/12
æ¬¡ä¸–ä»£JavaScriptã®æ–°æ©Ÿèƒ½ãƒ”ãƒƒã‚¯ã‚¢ãƒƒãƒ—ã€‚æœ¬æ–‡ã¯è‹±èªžã ã‘ã©ã‚‚ã‚³ãƒ¼ãƒ‰ã ã‘çœºã‚ã¦ã‚‚æ¥½ã—ã„ã€‚

javascript

ES6

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Continuum - A Next-Generation JavaScript (ES6) Virtual Machine Written in Last-Generation JavaScript (ES3)
A Next-Generation JavaScript (ES6) Virtual Machine Written in Last-Generation JavaScript (ES3)
ginpei 2013/10/18
æœªæ¥JavaScriptã‚’ã‚¦ã‚§ãƒ–ä¸Šã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã€å®Ÿè¡Œã—ã¦ãã‚Œã‚‹ã€‚ES6ã®æ–°æ©Ÿèƒ½ã‚’è©¦ã—ã¦ã¿ãŸããªã£ãŸã¨ãã«ã€‚

javascript

ES6
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GitHub - esnext/es6-module-transpiler: Tomorrowâ€™s JavaScript module syntax today
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ginpei 2013/09/02
æœªæ¥JSã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«æ©Ÿèƒ½ã‚’ä½¿ãˆã‚‹ã‚ˆã†ã«ã™ã‚‹ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãƒ¼ã€‚

javascript

ES6
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JavaScript.Next Returns
1. #KansumiB1 JavaScript.Next.returns @ Developers Summit 2012 Kansai by Tomoya ASAI (dynamis) Mozilla Japan - Technical Marketing last update on 2012.09.15 2. about:dynamis (Tomoya ASAI) http:// dynamis.jp @dynamitter facebook.com/ dynamis mailto: Tomoya ASAI (dynamis) <[email protected]>
ginpei 2013/04/21
MozillaæŠ€è¡“è€…ã®dynamisæ°ã«ã‚ˆã‚‹ECMAScript6ã®è§£èª¬ã‚¹ãƒ©ã‚¤ãƒ‰ã€‚strict modeã‚„getter/setterã€Mapç‰ã€…ã€112ãƒšãƒ¼ã‚¸ã®å¤§ä½œã€‚

Firefox

javascript

ES6
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