Try this:

    var date = new Date();
    console.log(date instanceof Date &amp;&amp; !isNaN(date.valueOf()));

This should return `true`.

*UPDATED: Added `isNaN` check to handle the case commented by [Julian H. Lam][1]*


  [1]: https://stackoverflow.com/users/122353/julian-h-lam

I recall in Oracle it is possible to index based on a function, e.g. `SUBSTRING(id,1,8)`.

Does MySQL support this? If not, is there is any alternative?

Is it possible to have function-based index in MySQL?

I am having a trouble adding left padding on a `UIButton`. I have a `UIButton` with `UIControlContentHorizontalAlignmentLeft`. I want the text to be displayed on the left side but it is too left. when I give the border, it doesn&#39;t look good. I would like to give some padding on the text about 5px like in CSS. I googled for the solution but can&#39;t find one particularly for `UIButton`. 
Thanks in advance for help.

How to add padding-left on a UIButton created programmatically?

&gt; **Possible Duplicate:**  
&gt; [Detecting an &amp;ldquo;invalid date&amp;rdquo; Date instance in JavaScript](https://stackoverflow.com/questions/1353684/detecting-an-invalid-date-date-instance-in-javascript)  

&lt;!-- End of automatically inserted text --&gt;

Is there is a function `IsDate()` in javascript?

Checking if a date is valid in javascript

> Possible Duplicate: 
> <a href="https://stackoverflow.com/questions/1353684/detecting-an-invalid-date-date-instance-in-javascript" target="_blank" rel="noopener noreferrer">Detecting an “invalid date” Date instance in JavaScript</a>

Is there is a function <code>IsDate()</code> in javascript?

I am writing a single page ajax app with ASP.NET MVC - making heavy use of jQuery.  I do something similar to the following throughout the app:

JS:

    $.ajax({
    	type: &quot;GET&quot;,
    	url: &quot;/Home/GetSomePartialView/&quot;,
    	data: someArguments,
    	success: function (viewHTML) { 
    		$(&quot;#someDiv&quot;).html(viewHTML); 
    	},
    	error: function (errorData) { onError(errorData); }
    });

Controller C#:

    public ActionResult GetSomePartialView(SomeArgumentModel someArguments)
    {
    	
    	return PartialView(&quot;_CaseManager&quot;);
    }

This works great.  The `viewHTML` (in the ajax `success` function) is returned as a string and I can shove it on the page no problem.

Now what I would like to do is to return not only the PartialView HTML string, but also some sort of status indicator.  This is a permissions thing - for instance, if someone tries to get to a portion of they app they don&#39;t have permission to, I want to return a different PartialView than they asked for and also display a message in a popup window telling them why they got an View different from what they asked for.

So - to do this, I would like to do the following:

Controller C#:

    public ActionResult GetSomePartialView(SomeArgumentModel someArguments)
    {
    	ReturnArgs r = new ReturnArgs();
    	
    	bool isAllowed = CheckPermissions(); 
    	
    	if (isAllowed) 
    	{
    		r.Status = 400; //good status ... proceed normally
    	    r.View = PartialView(&quot;_CaseManager&quot;);
    	}
    	else
    	{
    		r.Status = 300; //not good ... display permissions pop up
            r.View = PartialView(&quot;_DefaultView&quot;);
    	}
    	
    	return Json(r);
    }

    public class ReturnArgs
    {
    	public ReturnArgs()
    	{
    	}
    
    	public int Status { get; set; }
    	public PartialViewResult View { get; set; }
    }



JS:

    $.ajax({
    	type: &quot;GET&quot;,
    	url: &quot;/Home/GetSomePartialView/&quot;,
    	data: someArguments,
    	success: function (jsReturnArgs) { 
    		
    		if (jsReturnArgs.Status === 300) { //300 is an arbitrary value I just made up right now
    			showPopup(&quot;You do not have access to that.&quot;);
    		}
    	
    		$(&quot;#someDiv&quot;).html(jsReturnArgs.View); //the HTML I returned from the controller
    	},
    	error: function (errorData) { onError(errorData); }
    });



This **SORTA** works right now.  I get a good object in JavaScript (what I am expecting to see), however I cannot see how to get at the full HTML string of the `jsReturnArgs.View` property.  

I am really just looking for the same string that would be returned if I were just returning the `PartialView` by itself.

(As I mentioned at the beginning, this is a single page app - so I can&#39;t just redirect them to another View).

Thanks in advance for any help!

ASP.NET MVC - Returning a PartialView to Ajax along with another object

I am building search and I am going to use javascript autocomplete with it. I am from Finland (finnish language) so I have to deal with some special characters like &#228;, &#246; and &#229;

When user types text in to the search input field I try to match the text to data.

Here is simple example that is not working correctly if user types for example &quot;&#228;&#228;&quot;. Same thing with &quot;&#228;l&quot;

    var title = &quot;this is simple string with finnish word t&#228;m&#228; on &#228;&#228;kk&#246;stesti &#228;lk&#228;&#228; ihmetelk&#246;&quot;;
    // Does not work
    var searchterm = &quot;&#228;l&quot;;
    
    // does not work
    //var searchterm = &quot;&#228;&#228;&quot;;
    
    // Works
    //var searchterm = &quot;wi&quot;;
    
    if ( new RegExp(&quot;\\b&quot;+searchterm, &quot;gi&quot;).test(title) ) {
        $(&quot;#result&quot;).html(&quot;Match: (&quot;+searchterm+&quot;): &quot;+title);
    } else {
        $(&quot;#result&quot;).html(&quot;nothing found with term: &quot;+searchterm);   
    }

[http://jsfiddle.net/7TsxB/][1]


  [1]: http://jsfiddle.net/7TsxB/


So how can I get those &#228;,&#246; and &#229; characters to work with javascript regex? 

I think I should use unicode codes but how should I do that? Codes for those characters are:
[\u00C4,\u00E4,\u00C5,\u00E5,\u00D6,\u00F6]

=&gt; &#228;&#196;&#229;&#197;&#246;&#214;


Javascript RegExp + Word boundaries + unicode characters

Please take a look at the following image, we are using bootstrap carousel to rotate the images.
However, when the window width is large, the image doesn&#39;t align with the border properly.

But the carousel example provided by bootstrap always works fine, no matter the width of the window. Following the code. 

Can someone explain why carousel is behaving differently?
Is this anything to do with Image size or some bootstrap config is missing?

    &lt;section id=&quot;carousel&quot;&gt;
    &lt;div class=&quot;hero-unit span6 columns&quot;&gt;
        &lt;h2&gt;Welcome to TACT !&lt;/h2&gt;
        &lt;div id=&quot;myCarousel&quot; class=&quot;carousel  slide&quot; &gt;
          &lt;!-- Carousel items --&gt;
          &lt;div class=&quot;carousel-inner&quot;&gt;
            &lt;div class=&quot;item  active&quot; &gt;
                &lt;img alt=&quot;&quot;  src=&quot;/eboxapps/img/3pp-1.png&quot;&gt;
                &lt;div class=&quot;carousel-caption&quot;&gt;
                    &lt;h4&gt;1. Need a 3rd party jar?&lt;/h4&gt;
                &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class=&quot;item&quot;&gt;
                &lt;img alt=&quot;&quot;  src=&quot;/eboxapps/img/3pp-2.png&quot;&gt;
                &lt;div class=&quot;carousel-caption&quot;&gt;
                    &lt;h4&gt;2. Create Request&lt;/h4&gt;
                &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class=&quot;item&quot;&gt;
                &lt;img alt=&quot;&quot;  src=&quot;/eboxapps/img/3pp-3.png&quot;&gt;
                &lt;div class=&quot;carousel-caption&quot;&gt;
                    &lt;h4&gt;3. What happens?&lt;/h4&gt;
                &lt;/div&gt;
            &lt;/div&gt;
            &lt;div class=&quot;item&quot;&gt;
                &lt;img alt=&quot;&quot;  src=&quot;/eboxapps/img/3pp-4.png&quot;&gt;
                &lt;div class=&quot;carousel-caption&quot;&gt;
                    &lt;h4&gt;4. Status is Emailed&lt;/h4&gt;
                &lt;/div&gt;
            &lt;/div&gt;
          &lt;/div&gt;
          &lt;!-- Carousel nav --&gt;
          &lt;a class=&quot;carousel-control left&quot; href=&quot;#myCarousel&quot; data-slide=&quot;prev&quot;&gt;&amp;lsaquo;&lt;/a&gt;
          &lt;a class=&quot;carousel-control right&quot; href=&quot;#myCarousel&quot; data-slide=&quot;next&quot;&gt;&amp;rsaquo;&lt;/a&gt;
        &lt;/div&gt;
    &lt;/div&gt;
&lt;/section&gt;



![carousel image][1]


  [1]: http://i.stack.imgur.com/SJaUs.png

Bootstrap Carousel image doesn&#39;t align properly

**EDIT Oct 2016**: Please note this question was asked in 2012. Every month or so someone adds a new answer or comment that refutes an answer, but doesn&#39;t really make sense to do so as the question is probably out of date (remember, it was for **Gnome Javascript** to write gnome-shell extensions, not browser stuff, which is quite specific).

Following [my previous question](https://stackoverflow.com/questions/10580158/making-subclass-with-prototype-and-proto) on how to do subclassing in Javascript, I&#39;m making a subclass of a superclass like so:

    function inherits(Child,Parent) {
        var Tmp = function {};
        Tmp.prototype = Parent.prototype;
        Child.prototype = new Tmp();
        Child.prototype.constructor = Child;
    }
    /* Define subclass */
    function Subclass() {
        Superclass.apply(this,arguments);
        /* other initialisation */
    }
    /* Set up inheritance */
    inherits(Subclass,Superclass);
    /* Add other methods */
    Subclass.prototype.method1 = function ... // and so on.

My question is, **how do I define a setter/getter on the prototype with this syntax?**

I used to do:

    Subclass.prototype = {
        __proto__: Superclass.prototype,
        /* other methods here ... */
    
        get myProperty() {
            // code.
        }
    }

But obviously the following won&#39;t work:

    Subclass.prototype.get myProperty() { /* code */ }

I&#39;m using GJS (GNOME Javascript), and the engine is meant to be the more-or-less same as the Mozilla Spidermonkey one. My code is not intended for a browser so as long as it&#39;s supported by GJS (I guess that means Spidermonkey?), I don&#39;t mind if it&#39;s not cross-compatible.

How to define setter/getter on prototype

How can I delete a specific cookie with the name `roundcube_sessauth`?

Shouldn&#39;t the following:

    function del_cookie(name) {
        document.cookie = &#39;roundcube_sessauth&#39; + 
        &#39;=; expires=Thu, 01-Jan-70 00:00:01 GMT;&#39;;
    } 

And then:

    &lt;a href=&quot;javascript:del_cookie(name);&quot;&gt;KILL&lt;/a&gt;

Kill the `roundcube_sessauth` cookie?

Content Type	Original Author	Original Content on Stackoverflow
Question	Guilherme Costa	View Question on Stackoverflow
Solution 1 - Javascript	Gabriel Jürgens	View Answer on Stackoverflow

Checking if a date is valid in javascript

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

How to add padding-left on a UIButton created programmatically?

Is it possible to have function-based index in MySQL?

Attributions