To do this permanently by altering your JS files, comment out this code on line 637 of js/varien/js/js:
if (!("console" in window) || !("firebug" in console))
{
var names = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml",
"group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];
window.console = {};
for (var i = 0; i < names.length; ++i)
window.console[names[i]] = function() {}
}
Or, you could paste this into your layout somewhere (thanks to Alan Storm Show archive.org snapshot for this):
<default>
<reference name="content">
<block type="core/text" name="fix.console" as="fix.console">
<action method="setText">
<text><![CDATA[<script type="text/javascript">
iframe = document.createElement('iframe');
iframe.style.display = 'none';
document.getElementsByTagName('body')[0].appendChild(iframe);
window.console = iframe.contentWindow.console;
console.firebug = "faketrue";
</script>]]></text>
</action>
</block>
</reference>
</default>
To do this as a one-off, you can copy and paste this code into the console of your browser window (also thanks to Alan Storm Show archive.org snapshot for this):
iframe = document.createElement('iframe');
iframe.style.display = 'none';
document.getElementsByTagName('body')[0].appendChild(iframe);
window.console = iframe.contentWindow.console;
console.firebug = "faketrue";
Posted by Mike Whitby to Magento (2012-03-20 13:04)