JavaScript 的 Reactive 擴展：RxJS

靜態網頁已經成為歷史，如今的web設計趨勢是預測客戶想法并提供更好的互動功能，例如自動填寫表單、搜索Wikipedia等。RxJS框架可以很方便地為鼠標和鍵盤事件提供響應。

• rx.js - core library for ES5 compliant browsers and runtimes
• rx.compat.js - core library for older non-ES5 compliant browsers.
• rx.aggregates.js - aggregation event processing query operations
• rx.async.js - async operationrs such as events, callbacks and promises
• rx.async.compat.js - async operationrs such as events, callbacks and promises with support back to IE6
• rx.binding.js - binding operators including multicast, publish, publishLast, publishValue, and replay
• rx.coincidence.js - reactive coincidence join event processing query operations
• rx.experimental.js - experimental operators including imperative operators and forkJoin
• rx.joinpatterns.js - join patterns event processing query operations
• rx.testing.js - used to write unit tests for complex event processing queries.
• rx.time.js - time-based event processing query operations.
• rx.virtualtime.js - virtual-time-based schedulers.

示例代碼：

var $input = $('#input'),
    $results = $('#results');

/* Only get the value from each key up */
var keyups = Rx.Observable.fromEvent(input, 'keyup')
    .map(function (e) {
        return e.target.value;
    })
    .filter(function (text) {
        return text.length > 2;
    });

/* Now throttle/debounce the input for 500ms */
var throttled = keyups
    .throttle(500 /* ms */);

/* Now get only distinct values, so we eliminate the arrows and other control characters */
var distinct = keyups
    .distinctUntilChanged();

項目主頁：http://www.baiduhome.net/lib/view/home/1410671373226