It may not work in cases when execution context changed from console to any other object:

&gt; This is expected because console.info expects its &quot;this&quot; reference to
&gt; be console, not window.
&gt; 
&gt;     console.info(&quot;stuff&quot;)
&gt;     stuff
&gt;     undefined
&gt;     console.info.call(this, &quot;stuff&quot;)
&gt;     TypeError: Illegal invocation
&gt;     console.info.call(console, &quot;stuff&quot;)
&gt;     stuff
&gt;     undefined
&gt; 
&gt; This behavior is expected.

https://bugs.chromium.org/p/chromium/issues/detail?id=48662


I have seen conflicting information on how to best implement Open Graph namespaces. Specifically, the Open Graph website uses a few different methods, and the Facebook Open Graph examples use other methods.

Open Graph website example (using HTML prefix attribute):

&lt;!-- language-all: lang-html --&gt;

    &lt;html prefix=&quot;og: http://ogp.me/ns#&quot;&gt;

Open Graph website source code (using HTML XMLNS attribute):

    &lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot; xmlns:og=&quot;http://ogp.me/ns#&quot;&gt;

Facebook Open Graph documentation (using HEAD prefix attribute):

    &lt;head prefix=&quot;og: http://ogp.me/ns# fb: http://ogp.me/ns/fb#&quot;&gt;

Facebook Open Graph documentation #2 (using HTML XMLNS attribute):

    &lt;html xmlns=&quot;http://www.w3.org/1999/xhtml&quot; xmlns:og=&quot;http://ogp.me/ns#&quot; 
          xmlns:fb=&quot;https://www.facebook.com/2008/fbml&quot;&gt;

What is the recommended method or does it not even matter?

Open Graph namespace declaration: HTML with XMLNS or head prefix?

I have an application that uses &quot;secure&quot; cookies and want to test it&#39;s functionality without needing to set up a complicated SSL enabled development server.  Is there any way to do this as simply as I can test non-encrypted requests using `./manage.py runserver`?

How can I test https connections with Django as easily as I can non-https connections using &#39;runserver&#39;?

If you run this in the chrome console:

    console.log.apply(null, [array])

Chrome gives you back an error:

    // TypeError: Illegal Invocation

Why? *(Tested on Chrome 15 via OSX)*

TypeError: Illegal Invocation on console.log.apply

If you run this in the chrome console:
<pre><code class="hljs language-c">console.log.apply(null, [array])
</code></pre>
Chrome gives you back an error:
<pre><code class="hljs language-arduino">// TypeError: Illegal Invocation
</code></pre>
Why? (Tested on Chrome 15 via OSX)

![enter image description here][1]  
I have a MVC3 site in C#, I have a particular view being fed query parameters from a JavaScript function, the function redirects to the site via 

&gt; window.location.href = &quot;../ActionName?&quot; + query_string;

query_string being the dynamic query parameters string built by the JavaScript function.

The reason for this weirdness is that sometimes the same function passes the URL to an ASP.Net webform due to it having to use the **reportviewer** control, the alternate action is to save some parameters in this case it passes to the view. (Can elaborate more if that does not make sense)

The whole thing works fine until I introduce [Authorize] to the action method.
Breaks if it is in place, works fine without, and [Authorize] works fine on all the other methods.

The whole URL in this case is 966 chars long, after research it seems that the **maxQueryStringLength** value is 2048 by default but can overridden to any value of type integer, so just for grins I added the 

    &lt;security&gt;
      &lt;requestFiltering&gt;
        &lt;requestLimits maxQueryString=&quot;2048&quot;&gt;&lt;/requestLimits&gt;
      &lt;/requestFiltering&gt;
    &lt;/security&gt;

key to the web config file under the  &lt;system.webServer&gt; key.

No joy there, so I got ridiculous and made it 4096, still no joy.

Now with the whole URL being 966 chars long, the authorize attribute cannot seriously be adding another 1082-3130 chars, so how can I determine what the error actually is, or why the setting is not taking effect.

VS2010 Pro SP1


  [1]: http://i.stack.imgur.com/aJHgW.png

request exceeds the configured maxQueryStringLength when using [Authorize]

I have an array of objects and I&#39;d like to push an element at the beginning of the of the array.

I have this:

    var TheArray = TheObjects.Array;
    TheArray.push(TheNewObject);

It&#39;s adding `TheNewObject` at the end. Do I need to create a new array, add `TheNewObject` to it and then loop through `TheArray` and add each element the to the array?


javascript pushing element at the beginning of an array

I&#39;m interested in building a small real-time multiplayer game, using HTML5/JavaScript for the client and probably Java for the server software.

I looked into WebSockets a bit, but it appears I had misconceptions on what WebSockets actually are.  I had initially thought of WebSockets as just JavaScript&#39;s way of handling TCP sockets, just as they are used in Java and other languages, but it appears there is a whole handshaking process that must take place, and each transmission includes much HTTP overhead (and in that case, the benefits over Ajax do not seem as exciting as at a first glance)?

On a related topic, are there any better alternatives to WebSockets for this purpose (real-time multiplayer games in JavaScript)?

Are WebSockets suitable for real-time multiplayer games?

I have this JavaScript prototype:

    Utils.MyClass1 = function(id, member) {
    this.id = id;
    this.member = member;
    }

and I create a new object:

    var myobject = new MyClass1(&quot;5678999&quot;, &quot;text&quot;);

If I do: 

    console.log(JSON.stringify(myobject));

the result is:

    {&quot;id&quot;:&quot;5678999&quot;, &quot;member&quot;:&quot;text&quot;}

but I need for the type of the objects to be included in the JSON string, like this:

    &quot;MyClass1&quot;: { &quot;id&quot;:&quot;5678999&quot;, &quot;member&quot;:&quot;text&quot;} 

Is there a fast way to do this using a framework or something? Or do I need to implement a `toJson()` method in the class and do it manually?

Serialize JavaScript object into JSON string

What&#39;s the real difference between those two? I mean real, essential difference.
What&#39;s the future holding for regular `createElement`?

Svg is xml, not html. I get that. So we use `createElementNS(ns_string, &#39;svg&#39;)`
And then `setAttributeNS(null,,)`. Why?
Why not `setAttributeNS(&#39;my_ns&#39;,,)`?

Why must `ns_string` be `http://www.w3.org/2000/svg` and not some random string? What&#39;s the purpose of a namespace if there is only one namespace?

What&#39;s the purpose of `ns` in regular html? Should I change all instances of `createElement` to `createElementNS` in my existing code?

I am reading the [DOM-Level-2][1] spec. but I&#39;m still puzzled.


  [1]: http://www.w3.org/TR/DOM-Level-2-Core/core.html

createElement vs. createElementNS

I can&#39;t believe that neither a Google or SO search has turned up a definitive answer or even much discussion for this, but:

Is it possible to edit/customize keyboard shortcuts in the Google Chrome JavaScript debugger?  if so, how?

I&#39;m used to Eclipse&#39;s &lt;kbd&gt;F5&lt;/kbd&gt;/&lt;kbd&gt;F6&lt;/kbd&gt;/&lt;kbd&gt;F7&lt;/kbd&gt;/&lt;kbd&gt;F8&lt;/kbd&gt; debugger step into/over/out of/resume keys, and want the same bindings in Google Chrome.  &lt;kbd&gt;F10&lt;/kbd&gt;/&lt;kbd&gt;F11&lt;/kbd&gt; are default Expose keys for OSX and therefore not ideal for debugger control.

I&#39;m open to unorthodox solutions, e.g. Quicksilver/AppleScript.

Related, but not-quite-helpful, pages:

* https://stackoverflow.com/questions/1437412/
* [Chrome Keyboard Shortcuts Documentation](http://code.google.com/chrome/devtools/docs/shortcuts.html)

customize chrome developer tool javascript debugger keyboard shortcuts?

When using Chrome and it&#39;s JavaScript debugger, every time I reload my page / scripts, my breakpoints are lost and I have to go find the script file in the pop-up, find the line of code for my break point, click to add it, etc.

Is there a way to save these breakpoints so it breaks even after a page refresh (other debuggers I have used do this)?

Alternatively, is there a clean way in my JavaScript code I can type something to tell chrome to start tracing (to pause on a line)?

Chrome JavaScript Debugging - how to save break points between page refresh or break via code?

I ran into a problem while working with Selenium. For my project, I have to use Chrome. However, I can&#39;t connect to that browser after launching it with Selenium.

For some reason, Selenium can&#39;t find Chrome by itself. This is what happens when I try to launch Chrome without including a path:

    Traceback (most recent call last):
      File &quot;./obp_pb_get_csv.py&quot;, line 73, in &lt;module&gt;
        browser = webdriver.Chrome() # Get local session of chrome
      File &quot;/usr/lib64/python2.7/site-packages/selenium/webdriver/chrome/webdriver.py&quot;, line 46, in __init__
        self.service.start()
      File &quot;/usr/lib64/python2.7/site-packages/selenium/webdriver/chrome/service.py&quot;, line 58, in start
        and read up at http://code.google.com/p/selenium/wiki/ChromeDriver&quot;)
    selenium.common.exceptions.WebDriverException: Message: &#39;ChromeDriver executable needs to be available in the path.                 Please download from http://code.google.com/p/selenium/downloads/list                and read up at http://code.google.com/p/selenium/wiki/ChromeDriver&#39;

To solve this problem, I then included the Chromium path in the code that launches Chrome. However, the interpreter fails to find a socket to connect to:

    Traceback (most recent call last):
      File &quot;./obp_pb_get_csv.py&quot;, line 73, in &lt;module&gt;
        browser = webdriver.Chrome(&#39;/usr/bin/chromium&#39;) # Get local session of chrome
      File &quot;/usr/lib64/python2.7/site-packages/selenium/webdriver/chrome/webdriver.py&quot;, line 46, in __init__
        self.service.start()
      File &quot;/usr/lib64/python2.7/site-packages/selenium/webdriver/chrome/service.py&quot;, line 64, in start
        raise WebDriverException(&quot;Can not connect to the ChromeDriver&quot;)
    selenium.common.exceptions.WebDriverException: Message: &#39;Can not connect to the ChromeDriver&#39;

I also tried solving the problem by launching chrome with:
&lt;pre&gt;chromium --remote-shell-port=9222&lt;/pre&gt;
However, this did not work either.

PS. Here&#39;s some information about my system:
&lt;pre&gt;www-client: chromium 15.0.874.121  
dev-lang:   python 2.7.2-r3 Selenium 2.11.1  
OS:         GNU/Linux Gentoo Kernel 3.1.0-gentoo-r1&lt;/pre&gt;  

Running Selenium WebDriver python bindings in chrome

    if ($(&quot;#makespan&quot;).is(&quot;:visible&quot;) == true) { 
        var make = $(&quot;#make&quot;).val(); 
    }
    else {
        var make = $(&quot;#othermake&quot;).val(); 
    }

    Make:&lt;span id=makespan&gt;&lt;select id=make&gt;&lt;/select&gt;&lt;span id=othermakebutton class=txtbutton&gt;Other?&lt;/span&gt;&lt;/span&gt;&lt;span id=othermakespan style=&quot;display: none;&quot;&gt;&lt;input type=text name=othermake id=othermake&gt;&amp;nbsp;-&amp;nbsp;&lt;span id=othermakecancel class=txtbutton&gt;Cancel&lt;/span&gt;&lt;/span&gt;

The above code runs smooth in Firefox, but doesn&#39;t seem to work in Chrome. In Chrome it shows `.is(&quot;:visible&quot;) = false` even when it is `true`.

I am using following jQuery version: jquery-1.4.3.min.js

jsFiddle Link: http://jsfiddle.net/WJU2r/4/

jQuery `.is(&quot;:visible&quot;)` not working in Chrome

Im switching from firebug to Google Chrome developer tools. I like it so far, but one feature that I really missing is replaying a http post. 

on firebug, I can right click on the request (on the net or console tab), &quot;open in new tab&quot; and replay that request. When I try the same thing on google chrome, it did not sent it as POST instead as a GET so the parameter did not sent to the server

Is there any way i can do this in chrome?

Replay HTTP POST in google chrome Developer

In Linux, and many other systems, when navigating the terminal you can press &lt;kbd&gt;Tab&lt;/kbd&gt; to auto complete a directory or file name.

I&#39;m wondering if there is anything like that in the MySQL terminal. For example, if I want to get the description of `someTableWithRidiculousLongName` I could type `describe someTableW` then &lt;kbd&gt;Tab&lt;/kbd&gt; and it would auto-complete the rest.

Does anything like that exist in the MySQL terminal?


Autocompletion in the MySQL command-line client

Recently I installed node.js on my Windows 7 machine. 

On execution of JavaScript, I get an _undefined_ message along with successful execution of the expression. 

What&#39;s wrong here? I have not noticed any other side effects.

![enter image description here][1]


  [1]: http://i.stack.imgur.com/Egdfu.png

node.js displays &quot;undefined&quot; on the console

I have one method whose **return type is `void`** and it prints directly on console.

However I need that output in a String so that I can work on it.

As I can&#39;t make any changes to the method with return type `void` I have to redirect that output to a String.

How can I redirect it in Java?

Redirect console output to string in Java

How can I log into the browser console, like `console.log` in JavaScript, from the Dart language?

Console.log in Dart Language

Being totally new into node.js environment and philosophy i would like answers to few questions. I had downloaded the node.js for windows installer and also node package manager.Windows Cmd prompt is being currently used for running nodejs apps.

1. cls clears the command window or errors in command prompt. Is there a equivalent for node.js ? console.clear does not exist ;( or does it in some other form?

2. I created a server through this code below

        var http = require(&quot;http&quot;);
        http.createServer(function (request, response) {
        	response.writeHead(200, {
        		&quot;Content-Type&quot;: &quot;text/html&quot;
        	});
        	response.write(&quot;Hello World&quot;);
        	console.log(&quot;welcome world&quot;)response.end();
        }).listen(9000, &quot;127.0.0.1&quot;);

i changed the code to below and refreshed the browser to find that content type does not change, how do i get to see the changes?

    var http = require(&quot;http&quot;);
    http.createServer(function(request, response) {
      response.writeHead(200, {&quot;Content-Type&quot;: &quot;text/plain&quot;});
      response.write(&quot;Hello World&quot;);
      console.log(&quot;welcome world&quot;)
      response.end();
    }).listen(9000,&quot;127.0.0.1&quot;);

Content Type	Original Author	Original Content on Stackoverflow
Question	Jacksonkr	View Question on Stackoverflow
Solution 1 - Javascript	Pavel Podlipensky	View Answer on Stackoverflow

TypeError: Illegal Invocation on console.log.apply

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

How can I test https connections with Django as easily as I can non-https connections using 'runserver'?

Open Graph namespace declaration: HTML with XMLNS or head prefix?

Attributions