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    <p>Your form is actually submitting to the empty action. An empty action usually ends up refreshing the current page. So your page may be refreshing so fast that it appears to be an instant change of the <code>source-container</code> div.</p> <p>Instead of using a Submit button, try type=button and then set that button's onclick in the javascript. (Note the <code>id=""</code> on the Send button in the HTML)</p> <p><strong>HTML</strong></p> <pre><code>&lt;div id="command-container"&gt; &lt;form id="cmd-form" action="" onreset="resetSource()" method="get"&gt; &lt;input type="text" id="cmd-text" name="command" size="80" /&gt; &lt;input type="button" id="btnSend" value="Send" /&gt; &lt;input type="reset" value="Reset" /&gt; &lt;input type="submit" value="Run" /&gt; &lt;/form&gt; &lt;/div&gt; &lt;div id="source-container"&gt;NO CODE&lt;/div&gt; </code></pre> <p><strong>Javascript</strong></p> <pre><code>function pushCmd() { var cmdText = document.forms["cmd-form"]["cmd-text"].value; var srcElement = document.getElementById("source-container"); var srcText = new String(srcElement.innerHTML); srcText = srcText.toUpperCase(); alert(cmdText); if (srcText.indexOf("NO CODE") != 0) { srcText = cmdText; } else { srcText += "&lt;br&gt;" + cmdText; } srcElement.innerHTML = srcText; } document.getElementById('btnSend').onclick = pushCmd; </code></pre> <p>See this codepen as an example of this code: <a href="http://codepen.io/keithwyland/pen/scAJy" rel="nofollow">http://codepen.io/keithwyland/pen/scAJy</a></p>
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    1. COThis looks nice. I think I will convert both Send and Reset buttons the way you suggested. And Run button can be used as a submit option.
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    2. CO@mobbarley This is bad practice. You should always handle the `submit` event when dealing with a form being submitted. What happens when the "Return" key is pressed while a form's textbox is focused? In some browsers, it submits the form...in some, it doesn't.
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    3. COI suspected that mobbarley was going to use a different button for actually submitting the form, since what was desired with the Send button was just to update an element on the page without a refresh. I've edited the example to make Run the submit button as mobbarley added. Ian brings up a good point, that hitting enter in a form will submit it. So you'll want to think about how to handle that.
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