org.symbian.tools.wrttools.doc.WebDeveloper/html/GUID-B584CA90-543B-4AED-B134-A3A616259DB9.html
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console </title><script type="text/javascript">
function initPage() {}
</script><link href="../PRODUCT_PLUGIN/book.css" rel="stylesheet" type="text/css"/><link href="css/s60/style.css" rel="stylesheet" type="text/css" media="all"/></head><body onload="initPage();"><div class="body"><div class="contentLeft prTxt"><h1 class="pageHeading" id="GUID-B584CA90-543B-4AED-B134-A3A616259DB9">JavaScript
console</h1><div>
<p>All modern desktop browsers provide features to support developers debugging
JavaScript. While the browsers do not directly integrate true debugging support,
they usually support directing JavaScript error messages and logging statements
to either a console display or popup messages. Mozilla Firefox supports this
feature.</p>
<p>Consider the following trivial example of a web page with a JavaScript
error. It calls the method <code>document.writex()</code> which does
not exist.</p>
<pre class="codeblock" id="GUID-211D95D2-CA00-4EF4-9AC0-8943EEC6EA38"><html>
<body>
<script language = "JavaScript">
document.write('Testing1<br/>\n');
document.writex('Testing2<br>\n');
</script>
Test Page
</body>
</html>
</pre>
<ul>
<li><p>SETTINGS</p></li>
</ul>
<p>Go to <strong> Web > Settings > General</strong> and select the following option</p>
<p> • Java/ECMA Script </p>
<p>This option provides you support to enable/disable JavaScript.</p>
<div class="figure" id="GUID-A03C42D5-8BE6-4322-B116-B369BD9A976D"><img src="GUID-90ECCB11-41D3-4022-9DC0-F3770195F7FE_d0e10560_href.png"/></div>
<div class="tablenoborder"><a name="GUID-3BF9531A-3083-42C2-B550-78A95AA96793"><!----></a><table cellpadding="4" cellspacing="0" summary="" id="GUID-3BF9531A-3083-42C2-B550-78A95AA96793" frame="border" border="1" rules="all">
<tbody>
<tr class="">
<td class="cellrowborder" valign="top">
<p><strong>Enable</strong></p>
</td>
<td class="cellrowborder" valign="top">
<p>Enable JavaScript Console Support</p>
</td>
</tr>
<tr class="bg ">
<td class="cellrowborder" valign="top">
<p><strong>Disable</strong></p>
</td>
<td class="cellrowborder" valign="top">
<p>Disable JavaScript Console Support</p>
</td>
</tr>
</tbody>
</table></div>
<p>• Java/ECMA Script errors </p>
<p>This option provides you choices to display and log errors.</p>
<div class="figure" id="GUID-5300E803-3565-4664-A98B-AB64C9D063C1"><div><img src="GUID-6C793265-794B-49DB-BB14-B1D1F5F0CF6C_d0e10613_href.png" style="display: block"/></div></div>
<div class="tablenoborder"><a name="GUID-8993D51E-F5AD-4EB2-AE60-2BA5FC0A0937"><!----></a><table cellpadding="4" cellspacing="0" summary="" id="GUID-8993D51E-F5AD-4EB2-AE60-2BA5FC0A0937" frame="border" border="1" rules="all">
<tbody>
<tr class="">
<td class="cellrowborder" valign="top">
<p><strong>No Notification</strong></p>
</td>
<td class="cellrowborder" valign="top">
<p>Enable JavaScript Console Support</p>
</td>
</tr>
<tr class="bg ">
<td class="cellrowborder" valign="top">
<p><strong>Create Log file</strong></p>
</td>
<td class="cellrowborder" valign="top">
<p>It will create log file to the <code>C:\Data</code> folder of SDK</p>
</td>
</tr>
<tr class="">
<td class="cellrowborder" valign="top">
<p><strong>Show pop-up notes</strong></p>
</td>
<td class="cellrowborder" valign="top">
<p>It will show pop-up notes on the emulator screen</p>
</td>
</tr>
<tr class="bg ">
<td class="cellrowborder" valign="top">
<p><strong>Log and pop-up notes</strong></p>
</td>
<td class="cellrowborder" valign="top">
<p>It will show pop-up notes and create logs to <code>C:\Data</code> folder
of the SDK</p>
</td>
</tr>
</tbody>
</table></div>
<ul>
<li><p>ERROR SCENARIO </p></li>
</ul>
<p>Try to run the JavaScript example that has an error. Just like an ordinary
browser, it will display error message based on your selected criteria from
the web settings.</p>
<div class="figure" id="GUID-7AAA0735-CB62-4890-8D76-19A47A799E9E"><div><img src="GUID-A063B243-A746-4E10-8787-A08CD8818118_d0e10708_href.png" style="display: block"/></div></div>
<ul>
<li><p>HOW TO USE</p></li>
</ul>
<p>Below is the functional description of how this feature can be used.</p>
<ol>
<li id="GUID-7A345BE8-057D-414C-A539-7FB378396FD1"><a name="GUID-7A345BE8-057D-414C-A539-7FB378396FD1"><!----></a><p> An option
for JavaScript console is added to the Browser settings. There are three options
for this setting: <strong>Disable</strong>, <strong>Prompt</strong> and <strong>Log</strong>.</p>
<ul>
<li><p> When the <strong>Disable</strong> option is selected, the JavaScript
console for browser / widgets are disabled.</p></li>
<li><p>When the <strong>Prompt</strong> option is selected, JavaScript errors
and exceptions are presented in a popup dialog</p></li>
<li><p>When the <strong>Log</strong> option is selected, JavaScript errors
and exceptions are logged into a text file that is placed in a user accessible
area of the device’s file system. For example, <code>C:\data</code></p>
</li>
</ul>
</li>
<li id="GUID-75FA73E5-7A82-46B1-8325-67A89952286B"><a name="GUID-75FA73E5-7A82-46B1-8325-67A89952286B"><!----></a><p>JavaScript
console supports <code>console.log</code> for logging messages to the
console</p></li>
</ol>
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