[B! prototype] syuu256ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

syuu256 id:syuu256

prototypeã«é–¢ã™ã‚‹syuu256ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (5)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

ã‚„...ã‚„ã£ã¨ç†è§£ã§ããŸï¼JavaScriptã®ãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—ãƒã‚§ãƒ¼ãƒ³ - maeharinã®æ—¥è¨˜
JavaScriptã®ãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—ãƒã‚§ãƒ¼ãƒ³ã«ã¤ã„ã¦ç†è§£ã—ã‚ˆã†ã¨ã—ãŸã®ã ã‘ã©ã€prototypeã¨ã‹__proto__ã¨ã‹ã”ã¡ã‚ƒã”ã¡ã‚ƒã«ãªã£ã¦ã€è‰²ã‚“ãªãƒ–ãƒã‚°ã‚’èªã‚“ã§ã‚‚ãªã‹ãªã‹ç†è§£ã—ãã‚Œãªãã¦æ‚¶ã€…ã¨ã—ã¦ã„ãŸã®ã ãŒã€å›³ã‚’æ›¸ã„ãŸã‚‰ãƒ‘ãƒƒã¨ç†è§£ã§ããŸï¼ä»¥ä¸‹ã€æƒ…å ±ã‚½ãƒ¼ã‚¹ã¯ãªã‚‹ã¹ãECMAScriptä»•æ§˜æ›¸ï¼ˆ3rdï¼‰ã‚’å…ƒã«ã™ã‚‹ã‚ˆã†ã«ã—ã¦æ›¸ãã¾ã—ãŸ ãªãœåˆ†ã‹ã‚Šã¥ã‚‰ã„ã®ã‹ï¼Ÿ ãã‚‚ãã‚‚ã€ãªãœJavaScriptã®ãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—ãƒã‚§ãƒ¼ãƒ³ã¯è‡ªåˆ†ã«ã¨ã£ã¦ã“ã†ã‚‚åˆ†ã‹ã‚Šã¥ã‚‰ã‹ã£ãŸã®ã ã‚ã†ã‹ï¼Ÿè‡ªåˆ†ãªã‚Šã«åˆ†æžã—ã¦ã¿ã‚‹ã¨ã€ã¾ãšã€ã€Œä¼¼ã¦ã„ã‚‹ãŒé•ã†ç”¨èªžãŒæ²¢å±±ã‚ã‚‹ã€ã¨ã„ã†ç‚¹ãŒã‚ã‚‹ã€‚ã–ã£ã¨ã‚ã’ãŸã ã‘ã§ã‚‚ã€ã€Œprototypeã¨__proto__ã€ã€Œ__proto__ã¨[[Prototype]]ã€ã€ŒFunctionã¨Functionã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã€ãªã©ãŒã‚ã‚‹ã€‚ãã—ã¦æ¬¡ã«ã€ã€Œå…¥ã‚Šçµ„ã‚“ã æ§‹é€ ãŒå‹•çš„ã«å¤‰åŒ–ã™ã‚‹ã€ã¨ã„ã†ç‚¹ãŒã‚ã‚‹ã€‚ä¸Šè¨˜ã®ã‚ˆã†ã«ä¼¼ãŸã‚ˆã†
syuu256 2013/02/16
prototype

javascript

ECMAScript
ãƒªãƒ³ã‚¯
Rubyè„³ãŒç†è§£ã™ã‚‹JavaScriptã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆæŒ‡å‘ï¼ˆãã®ï¼’ï¼‰
ã€ŒRubyè„³ãŒç†è§£ã™ã‚‹JavaScriptã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆæŒ‡å‘ ã€ã®ç¶šãã§ã™ã€‚ å¼•ãç¶šãJavaScriptã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆæŒ‡å‘ã«ãŠã‘ã‚‹ã€Œç¶™æ‰¿ã€ã«ã¤ã„ã¦å¦ã‚“ã ã®ã§ã€è‡ªåˆ†ã®ç†è§£ã‚’æ›¸ã„ã¦ã¿ã¾ã™ã€‚å½“ç„¶ã«ã€é–“é•ã„ãŒå«ã¾ã‚Œã¦ã„ã¾ã™ã€‚ã”æŒ‡æ‘˜åŠ©ã‹ã‚Šã¾ã™ã€‚ å‰å›žã®ã¾ã¨ã‚ å‰å›žã®è¨˜äº‹ã§ã¯ã€JavaScriptã®ã€Œã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ç”Ÿæˆã€ã€ã€Œãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—ãƒã‚§ãƒ¼ãƒ³ã€ã€ã€Œã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚³ãƒ³ã‚¹ãƒˆãƒ©ã‚¯ã‚¿ã€ã€ã€Œnewæ¼”ç®—åã€ã®å„æ¦‚å¿µã«ã¤ã„ã¦é †ã«ã¿ã¾ã—ãŸã€‚ã“ã‚Œã‚‰ã‚’é€šã—ãŸJavaScriptã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆæŒ‡å‘ã«å¯¾ã™ã‚‹åƒ•ã®ç†è§£ã¯æ¦‚ãæ¬¡ã®ã‚ˆã†ãªã‚‚ã®ã§ã™ã€‚ ã™ã¹ã¦ã®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¯__proto__ãƒ—ãƒãƒ‘ãƒ†ã‚£ï¼ˆéžæ¨™æº–ï¼‰ã‚’æŒã£ã¦ã„ã¦ã€ãƒ—ãƒãƒ‘ãƒ†ã‚£æŽ¢ç´¢ã«é–¢ã—ã€ã“ã“ã«ã‚»ãƒƒãƒˆã•ã‚ŒãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’é †æ¬¡ãŸã©ã‚Šã“ã‚Œã‚’è§£æ±ºã™ã‚‹ï¼ˆãƒ—ãƒãƒˆã‚¿ã‚¤ãƒ—ãƒã‚§ãƒ¼ãƒ³ï¼‰ã€‚__proto__ã«ã¯ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ç©ºã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãŒã‚»ãƒƒãƒˆã•ã‚Œã¦ã„ã‚‹ã€‚ åŒç¨®ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆï¼ˆå±žæ€§å€¤ã ã‘ãŒç•°ãªã‚‹ã‚ª
syuu256 2012/09/16
javascript

prototype
ãƒªãƒ³ã‚¯
é€£è¼‰: IBM Watson Workspace #é¬¼ã‚ã‹ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³é–‹ç™º: ç¬¬ 7 å›ž: IBM Watson Workspace ã§ AI ã‚’åˆ©ç”¨ã—ãŸã‚¢ãƒ—ãƒªé€£æºã®å®Ÿç¾ #é¬¼ã‚ã‹ è§£èª¬ï¼ˆå‰ç·¨ï¼‰
IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
syuu256 2012/07/06
OOP

JavaScript

prototype
ãƒªãƒ³ã‚¯
prototypeã‚’æ‹¡å¼µã™ã‚‹ã“ã¨ã§å¾—ã‚‰ã‚Œã‚‹ã‚‚ã®ã€‚prototypeæ‹¡å¼µæŒ‡å‘ã¸ã®ã‚¹ã‚¤ãƒƒãƒ - latest log
(Îµãƒ»â—‡ãƒ»)Ð· mofmof.js ã‚„æ–°ã—ã„ uupaa.js ã§ã¯ prototypeæ‹¡å¼µã‚’æ´»ç”¨ã—ã¦ã„ã¾ã™ (Îµãƒ»â—‡ãƒ»)Ð· é•·æ‰€ãŒã‚ã‹ã‚Šã¥ã‚‰ã„ã¿ãŸã„ãªã®ã§ã€è¨€ã„å‡ºã—ã£ãºã®ãƒœã‚¯ã®ä¸ã®äººãŒãƒ¡ãƒªãƒƒãƒˆã‚’åˆ—æŒ™ã—ã¦ã¿ã‚ˆãƒ¼ ã¨ã„ã†ã‚¨ãƒ³ãƒˆãƒªã§ã™ (Îµãƒ»â—‡ãƒ»)Ð· ã§ã‚‚ã€é•·æ–‡ã«ãªã‚Šãã†ãªã®ã§ã€æ€ã„ã¤ã„ãŸã‚‰ã¡ã‚‡ã£ã¨ãšã¤æ›¸ãè¶³ã—ã¦ã„ã£ã¦ã€å¾Œã§å†ç·¨ã™ã‚‹ã‚ˆãƒ¼ ã¨ã„ã†ãƒŽãƒªã§ã™ (Îµãƒ»â—‡ãƒ»)Ð· ã‚¿ã‚¤ãƒˆãƒ«ã‚‚é©å½“ã§ã™ ã‹ã‚ã„ã„åã«ã¯æ—…ã‚’ã•ã›ã‚‹ã‚ˆ ( HTMLElement#cut ) åãƒŽãƒ¼ãƒ‰(div)ã‚’è¦ªãƒŽãƒ¼ãƒ‰ã‹ã‚‰ãƒ‘ãƒ¼ã‚¸ã™ã‚‹å‡¦ç†ã‚’è€ƒãˆã¦ã¿ã¾ã—ã‚‡ã†ã€‚ ---âœ‚-------------------âœ‚--- if (div.parentNode) { div.parentNode.removeChild(div); // div.parentNode = null } ---âœ‚-------------------âœ‚---
syuu256 2012/07/06
JavaScript

prototype
ãƒªãƒ³ã‚¯
JavaScript ã® new æ¼”ç®—åã®æ„å‘³: Days on the Moon
JavaScript ã«ãŠã‘ã‚‹ new æ¼”ç®—åã®å‹•ä½œã¯å¤§ã¾ã‹ã«ã„ã£ã¦ä»¥ä¸‹ã®ã¨ãŠã‚Šã§ã‚ã‚‹ã€‚(new F() ã¨ã—ãŸå ´åˆã€‚) æ–°ã—ã„ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’ä½œã‚‹ã€‚ 1 ã§ä½œã£ãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã® [[Prototype]] å†…éƒ¨ãƒ—ãƒãƒ‘ãƒ†ã‚£ (__proto__ ãƒ—ãƒãƒ‘ãƒ†ã‚£) ã« F.prototype ã®å€¤ã‚’è¨å®šã™ã‚‹ã€‚ F.prototype ã®å€¤ãŒã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã§ãªã„ã®ãªã‚‰ä»£ã‚ã‚Šã« Object.prototype ã®å€¤ã‚’è¨å®šã™ã‚‹ã€‚ F ã‚’å‘¼ã³å‡ºã™ã€‚ã“ã®ã¨ã this ã®å€¤ã¯ 1 ã§ä½œã£ãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¨ã—ã€å¼•æ•°ã«ã¯ new æ¼”ç®—åã¨ã¨ã‚‚ã«ä½¿ã‚ã‚ŒãŸå¼•æ•°ã‚’ãã®ã¾ã¾ç”¨ã„ã‚‹ã€‚ 3 ã®è¿”ã‚Šå€¤ãŒã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãªã‚‰ãã‚Œã‚’è¿”ã™ã€‚ãã†ã§ãªã‘ã‚Œã° 1 ã§ä½œã£ãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’è¿”ã™ã€‚ ã“ã“ã§ã€Œã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã§ã‚ã‚‹ã€ã¨ã„ã†ã®ã¯ãƒ—ãƒªãƒŸãƒ†ã‚£ãƒ–å€¤ (æ–‡å—åˆ—ã€æ•°å€¤ã€çœŸå½å€¤ã€undefined ã€null) ã§ã¯ãªã„ã¨ã„ã†ã“ã¨ã ã€‚new Stri
syuu256 2012/04/20
ECMAScript

JavaScript

prototype
ãƒªãƒ³ã‚¯
1