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Comet is a web application model in which a long-held HTTP request allows a web server to push data to a browser, without the browser explicitly requesting it. ''Comet'' is an umbrella term, encompassing multiple techniques for achieving this interaction. All these methods rely on features included by default in browsers, such as JavaScript, rather than on non-default plugins. The Comet approach differs from the original model of the web, in which a browser requests a complete web page at a time.〔 The use of Comet techniques in web development predates the use of the word ''Comet'' as a neologism for the collective techniques. Comet is known by several other names, including ''Ajax Push'',〔(【引用サイトリンク】title=Ajax Push )〕 ''Reverse Ajax'', ''Two-way-web'',〔 ''HTTP Streaming'', and ''HTTP server push''〔 〕 among others.〔 〕 The term ''Comet'' is not an acronym, but was coined by Alex Russell in his 2006 blog post ''Comet: Low Latency Data for the Browser''. 〔 〕 〔 〕 ==History== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Comet (programming)」の詳細全文を読む スポンサード リンク
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