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It:</p> <ul> <li>Provides an <a href="async.async.html" title="">async</a> method which converts event binding and dispatching to happen asynchronously.</li> <li>Provides <a href="async.sync.html" title="">sync</a> method which converts event binding and dispatching to happen synchronously.</li> <li>Provides an asynchronous <a href="async.dispatch.html" title="Dispatch events asynchronously.">dispatch</a>, <a href="async.queue.html" title="Queues a method to be called asynchronously.">queue</a>, [can-event/async/async.addEventListener] and [can-event/async/async.removeEventListener].</li> <li>Provides a <a href="async.flush.html" title="">flush</a> which can be used to immediately run all tasks in the task queue.</li> </ul> </div> <section class="body"> <h2>Use</h2> <p>Use <code>can-event/async/async</code>'s <code>async</code> method to make event binding and dispatching happen immediately following the current event loop.</p> <pre><code class="language-js">var canEvent = require("can-event"); var canAsync = require("can-event/async/async"); canAsync.async(); var obj = {}; Object.assign(obj, canEvent); obj.addEventListener("foo", function(){ console.log("heard foo"); }); obj.dispatch("foo"); console.log("dispatched foo"); // Logs -> "dispatched foo" then "heard foo" </code></pre> <p>This means you never have to call <a href="../batch/batch.start.html" title="Begin an event batch.">start</a> and <a href="../batch/batch.stop.html" title="End an event batch.">stop</a>. Notice that in the following example <code>"change"</code> is only fired once:</p> <pre><code class="language-js">var canAsync = require("can-event/async/async"); canAsync.async(); var compute = require("can-compute"); var first = compute("Justin"); var last = compute("Meyer"); var fullName = compute(function(){ return first() + " " + last(); }); fullName.on("change", function(ev, newVal, oldVal){ newVal //-> "Payal Shah" oldVal //-> "Justin Meyer" }); first("Payal"); last("Shah"); </code></pre> </section> <script type="text/javascript"> var docObject = {"src":{"path":"node_modules/can-event/async/async.md"},"description":"Makes the event system asynchronous. __WARNING:__ This is experimental technology. \n","type":"module","title":"","types":[{"type":"Object","options":[]}],"name":"can-event/async/async","parent":"can-infrastructure","signatures":[{"code":"Object","description":"\n\nThe `can-event/async/async` module makes the event system asynchronous. It:\n\n - Provides an [can-event/async/async.async] method which converts event binding and dispatching to happen asynchronously.\n - Provides [can-event/async/async.sync] method which converts event binding and dispatching to happen synchronously.\n - Provides an asynchronous [can-event/async/async.dispatch], [can-event/async/async.queue],\n [can-event/async/async.addEventListener] and [can-event/async/async.removeEventListener].\n - Provides a [can-event/async/async.flush] which can be used to immediately run all tasks in the\n task queue.\n","params":[]}],"comment":" ","pathToRoot":"../../.."}; </script> </article> <footer><p>CanJS is part of <a href="http://donejs.com" target="_blank">DoneJS</a>. 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