â»2017/4/21ã«ãªã³ãã¼ãæã®ãããã°æ¹æ³8ã追è¨ãã¾ããï¼ ããã«ã¡ã¯ï¼ã¨ã¤ãã¼ã å¼è¶ãä¾ã®å è¤ã§ãï¼ ã¿ãªããJavaScriptæ¸ãã¦ã¾ããï¼ console.logãã£ã¡ã使ãããã¼ã£ã¦äººã¯ç®ãããããã®ãããã°æ¹æ³ãã ã±ã¼ã¹æ¯ã«ç´¹ä»ãã¦ãããã¨æãã¾ãã(åã¯console.log使ãã¾ãã) ãµã¼ãã¼ã«ãããã°ç¨ã®ã³ã¼ããã¢ãããã¼ããããã¨ç¡ãã®ã§ã æ¶ããã«æå³ã«åãã¦ãªãªã¼ã¹ãã¦ãã¾ãå±éºæ§ããªãã®ããå§ãã§ãã åæç¥è F12ã§åºã¦ãããããããã¼ãã¼ã«(Elements, Console, Source, Network)ã®ç¥è Ctrl+Shift+Fã§å¤é¨ã½ã¼ã¹(js,css)ã«å¯¾ãã¦ä¸æ¬æ¤ç´¢ãã§ãã HTMLãCSSã¯Elementsããç´æ¥ä¿®æ£â確èªãã§ãã jsã¯Sourceããç´æ¥ä¿®æ£ã§ãã(Ctrl+Sã§ä¿åããããã®ç¶æ ã§å®è¡ã§ãã) jsã¯
ãã®ä¸ãæåã®å¦ç¿ææãæ´çãããªãã¸ããªãä½ã£ãã®ã§ããã®ææã«ã¤ãã¦ã¾ã¨ãã¦ããã ä½ã£ããµã³ãã«ããã¸ã§ã¯ãã ããæ軽ã«æ¬²ãããã°ããã®ãªãã¸ããªã clone ãã¦ã»ããã taichi/js-boilerplatemaster ãã©ã³ãã«ã¯ããããã 㪠JavaScript éçºç°å¢ããµã³ãã«ã³ã¼ãä»ãã§å ¥ã£ã¦ããfrontend ãã©ã³ãã«ã¯ãReact/Redux/webpackãªã¦ã§ãã¢ããªã±ã¼ã·ã§ã³ç¨ã®éçºç°å¢ãå ¥ã£ã¦ããããã©ã«ããã©ã³ãã«ãã¦ãã electron ãã©ã³ãã«ã¯ãfrontend ãã©ã³ãã®å 容ã«å ãã¦Electronã§ã¢ããªã±ã¼ã·ã§ã³ãéçºããããã®ç°å¢ãå ¥ã£ã¦ããã¯ããã«#æè¿ã® JavaScript ã«ã¤ãã¦#åã¯ä»äºã¨ã㦠JavaScript ãæ¸ãã¦ãã訳ã§ã¯ãªããã©ãããã®åå¹´ãããã®éã«ã¡ãã£ã¨ãããã¼ã«ãªãããã¤ãä½ã£ããã©ã¡ãã便å©
ã¯ããã« http://qiita.com/raccy/items/bf590d3c10c3f1a2846b ãè¦ã¦ããããã¯ã¦ãã«ãçç±ããªããããã¨ãããã¨ãããæãã£ã¦ããã®ã§ãçç±ãã¤ãã¦ããããæçãªå 容ã«ãªãããªï¼ã¨æããæããªãããè£è¶³ã試ã¿ããã¨æãã¾ãã ã2017 1/3 15:10 追è¨ã å è¨äºã®åæã¯gulpãªã©ã使ã£ã¦minifyãªã©ãè¡ãªããï¼ãããã¯è¡ãç®æ¨ãããï¼åæã®æ§åãªã®ã§ãä¸ç´è 以ä¸ãã¿ã¼ã²ããããªã¼ã¨æãã¾ããããã®ã¤ããã§èªãã¨ã¨ã¦ãããè¨äºã ã¨æã£ã¦ãã¾ãã ãææ°ã®JSã®æ¸ãæ¹ãè¦ãã¦ãã¨ã¯å¤ææ©è½ã«ä»»ããã°ã¬ã¬ã·ã¼ãªJSã®ããã¤ã¨ããã«åãåããªãã¦æ¸ã¿ã¾ããï¼ãã¿ãããªã¤ã¡ã¼ã¸ã ã¨ããããããããªï¼ ==ã!= çç± æé»ã®åå¤æãçºçãã¦ãå¥ã®åã®æ¯è¼ãçã§æ±ããã¦ãã¾ãå ´åãããããã 解説 ãµã³ãã«ã³ã¼ãã«ãåºã¦ãã¾ããè¨è足ãã
JavaScriptã¯å¤§å¤é£ããè¨èªã§ããRubyã®é£æ度ã2ãCã®é£æ度ã5ãC++ã®é£æ度ã8ã«ããã¨ãJavaScriptã®é£æ度ã¯12ãããããã¨æãã¾ãããã®ã³ã¼ãã£ã³ã°ã¬ã¤ãã¯ãããªJavaScriptã®æ·±ã¿ã«åµã¾ããªãããã«ããããã®JavaScriptã®æ¸ãæ¹ãè¦å®ãããã®ã§ããåç´è 1ã®ããã®ç©ã§ãã®ã§ãããã£ã¦ãã£ã¦ãã人ã«å¥½ãã«ãã£ã¦ãã ããã ãã®ã³ã¼ãã£ã³ã°ã¬ã¤ãã¯çµ¶å¯¾ã«å¾ããªããã°ãªããªããã®ã§ã¯ããã¾ãããç§ã¯ä¸åå¼·å¶ã¯ãã¾ããããåç´è ãå¾ããªããã°ãªããªãã¨ãã義åãããã¾ãããæ¡ç¨ããããªãã¯ã¿ãªããã®èªç±ã§ãã ç¦æ¢ç·¨ JavaScriptã«ã¯å®æã«ä½¿ç¨ãã¦ã¯ãããªãæ©è½ãããã¾ããä¸è¨ã®æ©è½ã¯ã**ããããã®æ©è½ã使ã£ã¦ãè¯ããã¾ãã¯ã使ãã¹ãã§ããã¨ããçç±ã説æã§ããªãéãã**使ç¨ãã¦ã¯ããã¾ããã ==ã!= ==ã¨!=ã使ç¨ãã¦ã¯ããã¾ãã
ãã£ããES6/ES2015,React.jsãå¦ã¶ 2016JavaScriptå ¥é 2016/11/21 @BizReach D3ã¤ãã³ãç»å£è³æ æè¿ã®JavaScriptåå ã»è©¦é¨ã«åºãJavaScript21å¹´ã®æ´å² ES6/ES2015ãå¦ã¶ ã»ES6/ES2015æ¦è¦ ã»ES5ãæ¯ãè¿ã ã»altjsã®æ義 Reactãå¦ã¶ ã»DOCãèªã ã»Tutorialããã ã¾ã¨ã ã»ä»åã®å¦ç¿ãéãã¦æããã㨠Read less
次ã®ãããªã³ã¼ããæ¸ãã¦ã import React from "react" export default () => <div>Hello!</div> 次ã®ãããªã³ãã³ããå©ãã¨ã katatema build 次ã®ãããªãã¡ã¤ã«ãçæãããã¨ãããkatatema ã¨ãããã¼ã«ãã¤ãã£ãã <!DOCTYPE html> <html> <head> </head> <body> <div>Hello!</div> </body> æå 端ã®æ¶è åã« ãã¼ãã¼ãã·ã§ã¼ãã«ãããã«ã¹ã¿ãã¤ãºãããã©ã¦ã¶æ¡å¼µ - ââ¹â¡â¹â ã§ããããããã¨ãæ¸ããã id:moznion ã¸ãå¯ãæ¥ãç¶ãã¾ãããå æ°ã§ãããã¨ãããChromeæ¡å¼µã1ã¤ããããã°ã大ã®å¤§äººãå¯ã£ã¦ããã£ã¦ã¢ãã³ã¨è¨ãåãé¡ã®ãã®ãä¸éãå¦ã¹ãã ããã¨æãã¾ãã æè¿ã®JavaScriptã®å¨è¾ºç°å¢ã¯å¤§å¤ã§ãä½ãããã«
å¤åã®æ©ãããã³ãã¨ã³ãçéã§ãã¾æ¼ããã¦ãããããææ°ã®JavaScripté¢é£è¨äºãKADOKAWAãéå¶ãããªã³ã©ã¤ã³ã¡ãã£ã¢ãWPJãããã¢ã¯ã»ã¹äººæ°é ã«ç´¹ä»ãã¾ãã
Much of time of developers spent on fixing problems. When it comes to fixes, one need to be good and fast at debugging. Debugging is part of programming. Itâs very difficult to write efficient JavaScript code without debugging. You must diagnose into code to find an actual root cause. In the era of IE, most of the programmer debug using alert. But now a dayâs many methods and tools added into brow
JavaScriptã®ã¨ã©ã¼å¦çãã¡ããã¨æ¸ãã¦ãã¾ããï¼ ã¨ã©ã¼ãç¡è¦ãããã©ãã«åé¡ãããã®ãããã¡ãã¨ç¢ºèªã§ããã³ã¼ãã®æ¸ãæ¹ããã¢ã§ç´¹ä»ã ãã®è¨äºã¯Tim Severienã¨Moritz Krögerãæ»èªãæ å½ãã¦ãã¾ããæè¯ã®è¨äºãæä¾ãããã¨ãã§ããSitePointã®æ»èªæ å½è ã®çããã«æè¬ãã¾ãã JavaScriptã®ã¨ã©ã¼å¦çã«ã¯å±éºãæ½ãã§ãã¨ãç¥ã£ã¦ãã¾ããï¼ããããã¼ãã£ã¼ã®æ³åãä¿¡é ¼ãã¦ããã¨ããããä¸å ·åãçããå¯è½æ§ãæ¬å½ã«é«ãã§ãï¼ããã®è¨äºã§ã¯ãJavaScriptã®ã¨ã©ã¼å¦çã«ã¤ãã¦èãããã®è½ã¨ãç©´ãã便å©ãªå®è·µä¾ã¾ã§ã説æãã¾ããããã«æå¾ã«ã¯ãéåæã³ã¼ãã¨Ajaxã«ã触ãã¾ãã JavaScriptã¯ã¤ãã³ãé§ååããã°ã©ã ã§ãããã°ã©ãã³ã°ãããè±ããªãã®ã«ãã¦ããã¾ãããã©ã¦ã¶ã¼ãã¤ãã³ãé§ååããã°ã©ã ã¨èããã¨ãçºçããã¨ã©ã¼ã¯åä¸
ãã¯ããã°ãã¡ã¯!! å°¾è¤ a.k.a. BTOã§ãã UUUMã§ã¯æ¥åã®å¹çæ¹åã« kintone ãå°å ¥ãããã¨ãã¦ããã®ã§ãããkintone ã®æ©è½ãæ¡å¼µããã«ã¯ Javascript ã§ããã°ã©ã ãæ¸ãå¿ è¦ãããã¾ãã ããã§ãJavascript ã®éçºç°å¢ãæ§ç¯ããã®ã§ãä½ããã£ãã®ããã¾ã¨ãã¦ã¿ã¾ããã å ·ä½çã«ã¯ã Babelã§ES6ã§æ¸ãã¦ãwebpackã§ãã«ããã¦ãmochaã§ãã¹ãæ¸ãã¦ãpower-assertã§assertã®åºåãè¦ããããã¦ãkarmaã§è¤æ°ãã©ã¦ã¶ã®ãã¹ããèªååãã¦ãã«ãã¬ãã¸ãåºåããããã«ãã¾ããã ãåã¯ä½ãè¨ã£ã¦ãããã ã¨æãããããã¾ããããåãä½ãè¨ã£ã¦ããã®ããããã¾ããã Babel è¨ããã¨ç¥ãã ES6 ç¨ã®ãã©ã³ã¹ãã¤ã«ãã¼ã«ã§ãã ãåç¥ã®æ¹ãå¤ãã¨æãã®ã§ã詳細ã¯å²æãã¾ããã Babel ã®å°å ¥ã¯ npm ã§ã¤
ã¤ã³ãã³ãã«ã¿ãã¨ã¹ãã¼ã¹ã®ã©ã¡ãã使ãã®ãããï¼ JavaScriptã«ã»ãã³ãã³ã¯ä»ããã¹ãï¼ JavaScript Standard Styleã使ãã°ãããªè«äºã«ãããã¤ãããããã¾ããã æè¿ã注ç®ãéãã¦ãã@ferossã®JavaScriptã¹ã¿ã¤ã«ã¬ã¤ããJavaScript Standard Styleãç´¹ä»ãã¾ãããã¼ã å ã§ã®éçºãåæ»ã«ãªããããã°ã©ãã³ã°ããã楽ãããªãã¾ãã JavaScriptã¹ã¿ã¤ã«ã¬ã¤ãã®ã³ã¼ãã£ã³ã°è¦ç´ã¯ãã¿ãã¨ã¹ãã¼ã¹ã®ã©ã¡ããè¯ããã¨ãã£ãä¸æ¯ãªè°è«ãç¡ãããã³ã¼ãã«ä¸è²«æ§ãæããã¦ããã¾ããJSLintãJSHintãESLintã¨ãã£ãLinterã§ä½¿ç¨ã§ããå¤ãã®ã¹ã¿ã¤ã«ã¬ã¤ãã®ãã¡ã®1ã¤ã§ãã ããLinterãåãããªããã°ãSitePointã®è¨äºãA Comparison of JavaScript Linting Too
ã¯ããã« JavaScriptåå¼·ä¼ã®è³æã§ãã å 容ã¯ãç°¡åãªã³ãã³ãã©ã¤ã³ãã¼ã«ãä½ããªãããJavaScript(ES2015ãå«ã)ã®æ¸ãæ¹ãå¦ã¶ãã®ã¨ãªã£ã¦ã¾ãã å 容çã«ã¯åå¿è åããªã®ã§ãJavaScriptãåå¼·ããããJavaScriptã¯è§¦ã£ããã¨ãããã©ES2015ãç¥ããªãã®ã§åå¼·ããããã¨ãã£ãæ¹ã対象ã§ãã JavaScriptã¨ã¯ Webãã©ã¦ã¶ã§å®è¡å¯è½ãªã¤ã³ã¿ããªã¿è¨èª æè¿ã§ã¯ãµã¼ããµã¤ãã®ãã®ããã(Node.jsãªã©) åãã©ã¦ã¶ã§ç¬èªã®å®è£ ãããããæ¨æºåãããECMAScriptã«æºæ ãã¦ãã ES5, ES2015(ES6), ES2016, ⦠ES2015ããã¯æ¯å¹´æ°ããè¦æ ¼ãçå®ããã ããã«ãããã³ããªã³ã°ã¯çå®ããå¹´ã«å¤æ´ ES2015 ES5(2011å¹´çå®)ãã4å¹´ã¶ãã«çå®ãããECMAScript é常ã«å¤ãã®æ©è½ã追å ããã
console.logé¢é£ã«ã¤ãã¦ã¾ã¨ãã¾ããã ã¢ãã³ãã©ã¦ã¶ã§ããã°ã©ãã使ç¨ã§ããã¨æãã¾ãããåºæ¬åºåçµæçã¯chromeã§ç¢ºèªãããã®ã§ãã console.hogehogeã®ãããã åºæ¬ å¼æ°ãå ¥ãããã¨ã§åºåçµæãã«ã¹ã¿ãã¤ãºã§ãã¾ã console.infoãconsole.warnãconsole.error ããããã§è¦ãç®ãå¤ãããã¨ãã§ãã¾ãã console.assert å¼ãè©ä¾¡ãã¦falseã®å ´åã«ãã°åºåãã¾ãã console.count ãã°ã®åºåçµæãåãå ´åã«ã«ã¦ã³ãæ°ãèªåçã«å¢ãã¦ããã¾ãã console.dir ãªãã¸ã§ã¯ãã®ããããã£ã®ä¸èº«ããã°ã«åºåãã¾ãã console.dirxml HTMLã¨ãXMLã®è¦ç´ ã渡ãã¨ãä¸ã®è¦ç´ ãå ¨é¨è¦ããããã«ãªãã¾ãã console.groupãconosle.groupCollapsed co
Service Workerã®å ¨ä½åã®è§£èª¬ã¨ããããããããWebã®æªæ¥ãèå¯ãã¾ããä»å¾ã®ååãå·¦å³ããããªService worker meeting notesã«ã¤ãã¦ã解説ãã¾ãã
<script src="//typekit.com/fj3j1j2.js"></script> <!-- This second script wonât execute until typekit has executed, or timed out --> <script src="//my.site/script.js"></script> ãã¼ã«ã«ã¹ã¯ãªããã¨ãªã¢ã¼ãã¹ã¯ãªãããçµã¿åããã¦ãåæ§ã«æä½ãããã¨ãã§ãã¾ãã æ©è½çã«ã¯ãWebãã¼ã¸ã®åã®é¨åã§éãã¹ã¯ãªããã®ãã¼ããããã¨ããµã¤ãã®è¡¨ç¤ºãæããã«é ããªããã¨ãæå³ãã¾ããããã«ããã¼ã¸ã®æå¾ã®æ¹ã§è¡¨ç¤ºãããã¹ã¯ãªããã¯ãããã¾ã§ã«åå¨ãããããã¹ã¯ãªããã®åä½ã«ä¾åãããã¨ãæå³ãã¾ãã å è¡ããå ¨ã¦ã®scriptã¿ã°ããã¼ãããå®è¡ãããã¾ã§ããã¼ã¸ä¸ã®è¦ç´ ã¯è¡¨ç¤ºããã¾ãããã¤ã¾ããããã©ã¼ãã³ã¹ã¸ã®æªå½±é¿ãè¦
ã©ãããã¾ãã¨ããï¼@0310lanï¼ã§ãã ä»åã¯ãé¢åãªç»é²æç¶ãããã¼ã¯ã³ãªã©ãä¸åä¸è¦ã§ãä»ããå©ç¨ã§ãã便å©ãªãWeb APIããå³é¸ãã¦ãç´¹ä»ãããã¨æãã¾ãã ãããã®APIã使ããã¨ã§ãWebå¶ä½ãã¡ãã£ã¨ä¾¿å©ã«ãªã£ãããç¬èªæ§ã®ããã¦ãã¼ã¯ãªãµã¼ãã¹ãæ§ç¯ã§ããããã«ãªãã§ãããã ã¾ããç°¡åã«æ±ãããã¨ããããWeb APIã使ã£ã¦ä½ãä½ã£ã¦ã¿ããâ¦ãã¨æã£ã¦ããåå¿è ã®æ¹ã«ããªã¹ã¹ã¡ã§ããï¼ â ãWeb APIãã®ä½¿ãæ¹ï¼ ä»åãç´¹ä»ãããAPIãã¯ããããããJSONPãå½¢å¼ã§ãã¼ã¿ãåå¾ã§ããã®ã§ãæ®éã®JavaScriptã ãã§è©¦ããã¨ãåºæ¥ã¾ãã 以ä¸ã®ã³ã¼ãããHTMLãã¡ã¤ã«ã«è¨è¿°ããããæ°è¦ã«JSãã¡ã¤ã«ãä½ã£ã¦èªã¿è¾¼ãããã«ãã¾ãããã var script = document.createElement('script'); script.src
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}