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             <h1>Promise composition</h1>
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-                <div class="textbox" style="margin: auto; width: 60%; font-size: 20px;">The `then` method of a promise accepts a function as an argument. This function takes a value and returns a new promise. The result of `then` is now a new promise that combines the previous two using the "composition rule" given to `then`.</div>
+                <div class="textbox" style="margin: auto; width: 60%; font-size: 20px;">The `then` method of a promise accepts a function as an argument. This function takes a value and returns a new promise. The new promise "combines" the previous two using the "composition rule" given to `then`.</div>
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-                <pre style="margin: auto;"><code style="font-size: 12px;"><span class="promise3"><span class="promise2"><span class="promise1">Promise.resolve("Some value")</span>.then(x => Promise.resolve(x + " and another value"))</span>.then(x => Promise.resolve(x + "and another one!"))</span>;</code></pre>
+                <pre style="margin: auto;"><code style="font-size: 12px;"><span class="promise3"><span class="promise2"><span class="promise1">Promise.resolve("Some value")</span>.then(x => Promise.resolve(x + " and another value"))</span>.then(x => Promise.resolve(x + " and another one!"))</span>;</code></pre>
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                 <div class="textbox" style="margin: auto; width: 60%; font-size: 20px; margin-top: 50px;">There are three promises in the above snippet. <span onmouseenter="activatePromise(1)" onmouseleave="deactivatePromise(1)" class="promise1">One</span>, <span onmouseenter="activatePromise(2)" onmouseleave="deactivatePromise(2)" class="promise2">two</span>, <span onmouseenter="activatePromise(3)" onmouseleave="deactivatePromise(3)" class="promise3">three</span>.</div>
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-                <pre style="margin: auto;"><code style="font-size: 12px;">Promise.resolve("Some value").then(x => Promise.reject("It's all gone wrong")).then(x => Promise.resolve(x + "and another one!"));</code></pre>
+                <pre style="margin: auto;"><code style="font-size: 12px;">Promise.resolve("Some value").then(x => Promise.reject("It's all gone wrong")).then(x => Promise.resolve(x + " and another one!"));</code></pre>
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                 <div class="textbox" style="margin: auto; width: 60%; font-size: 20px; margin-top: 50px;">The above snippet still results in a promise, but it is a "failed" one. Any subsequent `then` after the `reject` has no effect.</div>