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    <p><code>stopPropagation</code> stops the event from bubbling up the event chain.</p> <p><code>preventDefault</code> prevents the default action the browser makes on that event.</p> <p>Let's say you have</p> <pre><code>&lt;div id="foo"&gt; &lt;button id="but" /&gt; &lt;/div&gt; $("#foo").click(function() { // mouse click on div }); $("#but").click(function(ev) { // mouse click on button ev.stopPropagation(); }); </code></pre> <p><strong>Example</strong></p> <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-js lang-js prettyprint-override"><code>$("#but").click(function(event){ event.preventDefault(); }); $("#foo").click(function(){ alert("parent click event fired !"); });</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt; &lt;div id="foo"&gt; &lt;button id="but"&gt;button&lt;/button&gt; &lt;/div&gt;</code></pre> </div> </div> </p> <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-js lang-js prettyprint-override"><code>$("#but").click(function(event){ event.stopPropagation(); }); $("#foo").click(function(){ alert("parent click event fired !"); });</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"&gt;&lt;/script&gt; &lt;div id="foo"&gt; &lt;button id="but"&gt;button&lt;/button&gt; &lt;/div&gt;</code></pre> </div> </div> </p> <p>With <code>stopPropagation</code> only the <strong>buttons click handler</strong> is called and the <strong>divs click handler</strong> never fires.</p> <p>Where as if you just <code>preventDefault</code> only the browsers default action is stopped but the div's click handler still fires.</p> <p>Below are some docs on the DOM event objects from <code>MDN</code> and <code>MSDN</code></p> <p><strong>MDN:</strong></p> <ul> <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/Event/cancelBubble" rel="noreferrer"><code>event.cancelBubble</code></a></li> <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/Event/preventDefault" rel="noreferrer"><code>event.preventDefault</code></a></li> <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/Event/returnValue" rel="noreferrer"><code>event.returnValue</code></a></li> <li><a href="https://developer.mozilla.org/en-US/docs/Web/API/Event/stopPropagation" rel="noreferrer"><code>event.stopPropagation</code></a></li> </ul> <p>For IE9 and FF you can just use preventDefault &amp; stopPropagation.</p> <p>To support IE8 and lower replace <code>stopPropagation</code> with <code>cancelBubble</code> and replace <code>preventDefault</code> with <code>returnValue</code></p>
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    1. COSo they're very different? Does IE have two different event methods for that too? (Might they be the same??) It's weird that frameworks do both in their `event.stop` function... Also weird I've never had trouble with that. I use bubbling a lot. Thanks for the example!
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    2. CO@Rudie commented on browser support.
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