Firefox Web Console Disabled?

Question

How come I get this message from Firefox Web Console

The Web Console logging API (console.log, console.info, console.warn, console.error) has been di

Answer 1

Here is a JavaScript workaround I used to restore console API after it was set to empty function by a script on the page (works in Firefox 46, tested in Firebug and in greasemonkey script):

function restoreConsole() {
    var i = document.createElement('iframe');
    i.style.display = 'none';
    document.body.appendChild(i);
    window.console = i.contentWindow.console;
    i.parentNode.removeChild(i);
}

More info and credentials: Restoring console.log()