A Recursive setTimeout Pattern - Eric Hynds
Monday, October 18, 2010 Colin Snover wrote a good article about why he thinks setInterval is considered harmful: setInterval ignores errors. If an error occurs in part of your code, it'll be thrown over and over again. setInterval does not care about network latency. When continuously polling a remote server for new data, the response could take longer than the interval amount, resulting in a bun
jQuery: AJAX Queue/Cache/Abort/Block Manager
AJAX Queue/Cache/Abort/Block Manager v. 3.0 Helps you to manage AJAX requests and responses (i.e. abort requests, block requests, order requests). It is inspired by the AJAX Queue Plugin and the AjaxQueue document in the jQuery-Wiki. $.manageAjax.create (uniqueName, options) Creates a new ajaxmanager and returns it. Takes a list of options: normal jQuery-Ajax-Options queue: (true|false|'clear') th
【jQuery】abort() でAjax通信を中断するには - すたら日記
もう、通常のJavascriptでAjaxする方法は忘れてしまいましたが、 エラーやタイムアウトなどを受けてAjax通信を中断するには、 xhr.abort(); // xhrはXMLHttpオブジェクトを格納している のように、"abort()"メソッドを使うようです。 jQueryでも上記の"abort()"が使えますが、どうやらXMLHttpオブジェクトを 『$()』で囲んでjQueryオブジェクトにしなくてはならないようです。 【訂正:2012年2月13日】 jQueryでも同じでした orz 逆に、jQueryオブジェクトのメソッドとしてabortを呼び出そうとすると失敗します。 (jQuery 1.3.1、1.7.1 で確認しました。) jQuery: // 失敗 var xhr = $.get("test.php"); $(xhr).abort(); // 成功 var xh
連載: IBM Watson Workspace #鬼わか アプリケーション開発: 第 7 回: IBM Watson Workspace で AI を利用したアプリ連携の実現 #鬼わか 解説（前編）
$.ajaxでYQL経由のクロスドメインリクエストを可能にするjQueryプラグインを作りました - yattのブログ
jQueryでAjaxを行う$.ajax関数に、Yahoo Query Language APIを利用したクロスドメインAjax機能を追加するjQuery Pluginを作りました。ソースはgithubにあります。 https://github.com/yatt/jquery.xdomainrequest インクルードするとこんな感じでクロスドメインのリクエストができるようになります。 $.ajax({ url: ['http://externalsite.com/x.json', 'http://ex.jp/y.json'] dataType: 'xdomain:json' success: function(data){ console.log(data[0].result.count) // x.json console.log(data[1].user.id) // y.json
Google App Engineでクロスドメイン通信
前回「秋はまだですか」と書きましたが、その日のうちに気温下がったｗ これでちょっと過ごしやすくなったかも。…薄着で寝ててちょっと風邪引きそうになったのは内緒(・ω・) 本題。 クロスドメインでの非同期通信(XMLHttpRequest Level2)をGoogle App Engineで実装したのでメモ。はまったポイントもいくつか書いておきます。 特にハマったのは出力ヘッダ周り。 Access-Control-Allow-Origin これはあちこちのサイトに書かれてますね。このヘッダを「*」で出力してあげると他ドメインからの通信を受け付けるようになります。・・・が、これだけじゃダメなんです。 Access-Control-Allow-Methods こいつを指定してあげないとサーバーが受け付けてくれません。GETならGET、POSTならPOST・・・と指定してあげないといけません。これは
enable cross-origin resource sharing
Cross-Origin Resource Sharing (CORS) is a specification that enables truly open access across domain-boundaries. If you serve public content, please consider using CORS to open it up for universal JavaScript/browser access. [more...] Why is CORS important? JavaScript and the web programming has grown by leaps and bounds over the years, but the same-origin policy still remains. This prevents JavaSc
Yahoo! UI Library: DataTable
The DataTable control provides a simple yet powerful API to display screen-reader accessible tabular data on a web page. Notable features include sortable columns, pagination, scrolling, row selection, resizeable columns, and inline editing. Note: The DataTable control is being released as a beta component. Please refer to the FAQ for what we mean by this designation. We look forward to your feedb
google closureでAjax - ソフトウェアエンジニアのブログ
google closureでAjax実装 簡単なサンプルです。 ステータスコードで判断する場合 goog.require("goog.net.XhrIo"); function doRequest() { var url = 'http://localhost:8888/create'; var postData = 'type=user&first=Bob&last=Evans'; var callback = function(e) { var xhr = /** @type {goog.net.XhrIo} */ (e.target); if (xhr.getStatus() == 201) { alert('成功しました'); } else { alert('失敗しました'); } } goog.net.XhrIo.send(url, callback, 'POST', post
How to do HTTP Basic Auth in Ajax - CodersEye.com
You can use HTTP Basic Authentication with Javascript/Ajax in just three steps. I’ll give you them in just a moment. The Background This morning, I was experimenting with Adobe AIR, writing a client to tell me whether I have games waiting for me to make a move on Weewar, and I needed to be able to use my username and “token” via Basic Auth to do that. It was not easy to find how to do it. In fact,
Cross-domain Ajax with Cross-Origin Resource Sharing - Human Who Codes
Posted at May 25, 2010 by Nicholas C. Zakas Tags: Ajax, CORS, JavaScript, XDomainRequest, XDR, XHR, XMLHttpRequest A couple of years ago, web developers were banging their head against the first wall in Ajax: the same-origin policy. While we marveled at the giant step forward enabled by cross-browser support for the XMLHttpRequest object, we quickly bemoaned the fact that there was no way to make
cross-site xmlhttprequest with CORS – Mozilla Hacks - the Web developer blog
Editor’s Note: This article sure is a popular one! The Fetch API is now available in browsers and makes cross-origin requests easier than ever. Check out this Hacks post or the link above to learn more. XMLHttpRequest is used within many Ajax libraries, but till the release of browsers such as Firefox 3.5 and Safari 4 has only been usable within the framework of the same-origin policy for JavaScri
HTML5-powered Ajax file uploads
This post was originally published on the New Bamboo blog, before New Bamboo joined thoughtbot in London. This information is out of date. See the followup article on FormData. Introduction File uploads have traditionally had very bad usability on the web. The standard solution was uploading files as part of a form, leaving the user to just wait until the process was done. We could offer barely an
Drag-and-drop file upload in Google Chrome/Chromium and Safari?
Drag-and-drop file uploading can be done in Firefox 3.6. A Google search for html5 drag-and-drop file uploading -gmail gives things like: Native Drag + Drop file upload in Firefox 3.6 http://www.appelsiini.net/2009/10/html5-drag-and-drop-multiple-file-upload http://www.thecssninja.com/javascript/drag-and-drop-upload All of these guides use FileReader (or the Firefox 3.6's deprecated getAsBinary, w
HTML5 AJAX File Upload
HTML5 AJAX File Upload timdream Tossug, Sep. 14, 2010 AJAX File Upload The ability to send files from browser to server without whole-page form submission Demand exists ever since rich web app. was being developed (circa. 2004) People tried to do this by other means Flash-based resolution, e.g. SWFUpload Flash sucks on non-IE browsers (NPAPI version) Even sucks more on iOS iframe and a form Breaks
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第19回html5とか勉強会 PJAX ～HTML5時代のAJAXサイトプラクティス～
http://calavera.info/v2/blog/2010/02/22/pure-javascript-webdav-file-manager.xml