You need to compare the raw DOM elements, e.g.:

    if ($(this).parent().get(0) === $(&#39;body&#39;).get(0))

or

    if ($(this).parent()[0] === $(&#39;body&#39;)[0])

Why not:

    if ($(this).parent().is(&quot;body&quot;)) {
      ...
    }

?


Looping is not required, testing the single first node is not required.  Pretty much nothing is required other than ensuring they are the same length and share identical nodes.  Here is a small code snippet.  You may even want to convert this into a jquery plugin for your own uses.

    jQuery(function($) {
      // Two separate jQuery references
      var divs = $(&quot;div&quot;);
      var divs2 = $(&quot;div&quot;);
    
      // They are equal
      if (divs.length == divs2.length &amp;&amp; divs.length == divs.filter(divs2).length) {         
      
      // They are not
      } else {}
    });



I stumbled on these answers and wondered which one was better. It all depends on your needs but the easiest to type, read and execute is the best of course. Here&#39;s the perf testcase I made to make a decision.

http://jsperf.com/jquery-objects-comparison

I&#39;ve been working for quite a while now with LINQ. However, it remains a bit of a mystery what the real differences are between the mentioned flavours of LINQ. 

**The successful answer will contain a short differentiation between them. What is the main goal of each flavor, what is the benefit, and is there a performance impact...**

P.S.
I know that there are a lot of information sources out there, but I&#39;m looking for a kind of a &quot;cheat sheet&quot; which instructs a newbie where to head for a specific goal.

What is the difference between &quot;LINQ to Entities&quot;, &quot;LINQ to SQL&quot; and &quot;LINQ to Dataset&quot;

Both the interfaces seem to compare objects for equality, so what are the major differences between them?

What&#39;s the difference between IComparable &amp; IEquatable interfaces?

So I&#39;m trying to figure out how to compare two jQuery objects, to see if the parent element is the body of a page.

here&#39;s what I have:

    if ( $(this).parent() === $(&#39;body&#39;) ) ...

I know this is wrong, but if anybody understands what I&#39;m getting at, could they point me towards the correct way of doing this?

How would you compare jQuery objects?

So I'm trying to figure out how to compare two jQuery objects, to see if the parent element is the body of a page.
here's what I have:
<pre><code class="hljs language-javascript">if ( $(this).parent() === $('body') ) ...
</code></pre>
I know this is wrong, but if anybody understands what I'm getting at, could they point me towards the correct way of doing this?

This is my code:

    &lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.01 Transitional//EN&quot;
    	&quot;http://www.w3.org/TR/html4/loose.dtd&quot;&gt; 
    &lt;html&gt; 
    	&lt;head&gt; 
    		&lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, user-scalable=no&quot;&gt; 
    	&lt;/head&gt; 
    &lt;body&gt; 
    		&lt;style type=&quot;text/css&quot; media=&quot;screen&quot;&gt; 
    
    		&lt;/style&gt; 
    		
    		&lt;!--&lt;div id=&quot;map_canvas&quot; style=&quot;width: 500px; height: 300px;background:blue;&quot;&gt;&lt;/div&gt;--&gt;
    
    		&lt;div class=b style=&quot;width: 200px; height: 200px;background:pink;position:absolute;left:500px;top:100px;&quot;&gt;&lt;/div&gt;
    		&lt;script src=&quot;jquery-1.4.2.js&quot; type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
    		&lt;script src=&quot;jquery-ui-1.8rc3.custom.min.js&quot; type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
    		&lt;script type=&quot;text/javascript&quot; charset=&quot;utf-8&quot;&gt; 
    
    		&lt;/script&gt; 
    	&lt;/body&gt; 
    &lt;/html&gt;


Thanks

How do I make a div element editable (like a textarea when I click it)?

I would like to catch a click event with jQuery and be able to tell if a key was pressed at the same time so I can fork within the callback function based on the keypress event.

**For example:**

    $(&quot;button&quot;).click(function() {
        if([KEYPRESSED WHILE CLICKED]) {
            // Do something...
        } else {
            // Do something different...
        }
    });

Is this possible at all or how can it be done if it is possible?


How can I check if a key is pressed during the click event with jQuery?

I am getting an error in an ajax call from jQuery.

Here is my jQuery function:

 
&lt;!-- language: javascript --&gt;

    function DeleteItem(RecordId, UId, XmlName, ItemType, UserProfileId) {
        var obj = {
            RecordId: RecordId,
            UserId: UId,
            UserProfileId: UserProfileId,
            ItemType: ItemType,
            FileName: XmlName
        };
        var json = Sys.Serialization.JavaScriptSerializer.serialize(obj);
    
        $.ajax({
            type: &quot;POST&quot;,
            url: &quot;EditUserProfile.aspx/DeleteRecord&quot;,
            data: json,
            contentType: &quot;application/json; charset=utf-8&quot;,
            dataType: &quot;json&quot;,
            async: true,
            cache: false,
            success: function(msg) {
                if (msg.d != null) {
                    RefreshData(ItemType, msg.d);
                }
            },
            error: function(XMLHttpRequest, textStatus, errorThrown) {
                alert(&quot;error occured during deleting&quot;);
            }
        });
    }

and this is my `WebMethod`:

&lt;!-- language: lang-cs --&gt;

    [WebMethod]
    public static string DeleteRecord(Int64 RecordId, Int64 UserId, Int64 UserProfileId, string ItemType, string FileName) {
        try {
            string FilePath = HttpContext.Current.Server.MapPath(FileName);

            XDocument xmldoc = XDocument.Load(FilePath);
            XElement Xelm = xmldoc.Element(&quot;UserProfile&quot;);
            XElement parentElement = Xelm.XPathSelectElement(ItemType + &quot;/Fields&quot;);

            (from BO in parentElement.Descendants(&quot;Record&quot;)
             where BO.Element(&quot;Id&quot;).Attribute(&quot;value&quot;).Value == RecordId.ToString()
             select BO).Remove();
            XDocument xdoc = XDocument.Parse(Xelm.ToString(), LoadOptions.PreserveWhitespace);
            xdoc.Save(FilePath);

            UserInfoHandler obj = new UserInfoHandler();
            return obj.GetHTML(UserId, UserProfileId, FileName, ItemType, RecordId, Xelm).ToString();
        } catch (Exception ex) {
            HandleException.LogError(ex, &quot;EditUserProfile.aspx&quot;, &quot;DeleteRecord&quot;);
        }
        return &quot;success&quot;;
    }

Can anybody please tell me what&#39;s wrong in my code?

I am getting this error:

    {
        &quot;Message&quot;:&quot;Invalid JSON primitive: RecordId.&quot;,
        &quot;StackTrace&quot;:&quot;
           at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializePrimitiveObject()
           at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)
           at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer)
           at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)
           at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize[T](String input)
           at System.Web.Script.Services.RestHandler.GetRawParamsFromPostRequest(HttpContext context, JavaScriptSerializer serializer)
           at System.Web.Script.Services.RestHandler.GetRawParams(WebServiceMethodData methodData, HttpContext context)
           at System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)&quot;,
        &quot;ExceptionType&quot;:&quot;System.ArgumentException&quot;
    }



&quot;Invalid JSON primitive&quot; in Ajax processing

Given multiple anchor tags:

    &lt;a class=&quot;myclass&quot; href=&quot;...&quot;&gt;My Text&lt;/a&gt;

How do I select the anchors matching the class and with some specific text. eg Select all anchors with the class:&#39;myclass&#39; and text:&#39;My Text&#39;






How to select all anchor tags with specific text

Given the following:

    &lt;ul id=&quot;list&quot;&gt;
        &lt;li&gt;Item 1&lt;/li&gt;
        &lt;li class=&quot;active&quot;&gt;Item 2&lt;/li&gt;
        &lt;li&gt;Item 3&lt;/li&gt;
        &lt;li&gt;Item 4&lt;/li&gt;
        &lt;li&gt;Item 5&lt;/li&gt;
    &lt;/ul&gt;

How can I select all but Item 2, AKA something like:

    $(&quot;ul#list li!active&quot;)

How can I select all elements without a given class in jQuery?

So we got this function in PHP 

    strcmp(string $1,string $2) // returns -1,0, or 1;

We Do not however, have an intcmp(); So i created one:

    function intcmp($a,$b) {
        if((int)$a == (int)$b)return 0;
        if((int)$a  &gt; (int)$b)return 1;
        if((int)$a  &lt; (int)$b)return -1;
    }

This just feels dirty.  What do you all think?

this is part of a class to sort Javascripts by an ordering value passed in.

    class JS
    {
        // array(&#39;order&#39;=&gt;0,&#39;path&#39;=&gt;&#39;/js/somefile.js&#39;,&#39;attr&#39;=&gt;array());
        public $javascripts = array(); 
        ...
        public function __toString()
        {
            uasort($this-&gt;javascripts,array($this,&#39;sortScripts&#39;));
            return $this-&gt;render();
        }
        private function sortScripts($a,$b)
        {
            if((int)$a[&#39;order&#39;] == (int)$b[&#39;order&#39;]) return 0;
            if((int)$a[&#39;order&#39;] &gt; (int)$b[&#39;order&#39;]) return 1;
            if((int)$a[&#39;order&#39;] &lt; (int)$b[&#39;order&#39;]) return -1;
        }
        ....
    }

strcmp equivelant for integers (intcmp) in PHP

I have the following 2 data.frames:

    a1 &lt;- data.frame(a = 1:5, b=letters[1:5])
    a2 &lt;- data.frame(a = 1:3, b=letters[1:3])

I want to find the row a1 has that a2 doesn&#39;t.

Is there a built in function for this type of operation?

(p.s: I did write a solution for it, I am simply curious if someone already made a more crafted code)

Here is my solution:

    a1 &lt;- data.frame(a = 1:5, b=letters[1:5])
    a2 &lt;- data.frame(a = 1:3, b=letters[1:3])
    
    rows.in.a1.that.are.not.in.a2  &lt;- function(a1,a2)
    {
    	a1.vec &lt;- apply(a1, 1, paste, collapse = &quot;&quot;)
    	a2.vec &lt;- apply(a2, 1, paste, collapse = &quot;&quot;)
    	a1.without.a2.rows &lt;- a1[!a1.vec %in% a2.vec,]
    	return(a1.without.a2.rows)
    }
    rows.in.a1.that.are.not.in.a2(a1,a2)



Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2

In Java, `Arrays.equals()` allows to easily compare the content of two basic arrays (overloads are available for all the basic types).

Is there such a thing in C#? Is there any &quot;magic&quot; way of comparing the content of two arrays in C#?


Easiest way to compare arrays in C#

How can I compare two dates in PHP?

The date is stored in the database in the following format 

&gt;2011-10-2

If I wanted to compare today&#39;s date against the date in the database to see which one is greater, how would I do it?

I tried this,

    $today = date(&quot;Y-m-d&quot;);
    $expire = $row-&gt;expireDate //from db
    
    if($today &lt; $expireDate) { //do something; }

but it doesn&#39;t really work that way. What&#39;s another way of doing it?

How can I compare two dates in PHP?

I&#39;ve got a list of datetime objects, and I want to find the oldest or youngest one. Some of these dates might be in the future.

    from datetime import datetime

    datetime_list = [
        datetime(2009, 10, 12, 10, 10),
        datetime(2010, 10, 12, 10, 10),
        datetime(2010, 10, 12, 10, 10),
        datetime(2011, 10, 12, 10, 10), #future
        datetime(2012, 10, 12, 10, 10), #future
    ]

What&#39;s the most optimal way to do so? I was thinking of comparing datetime.now() to each one of those.

Content Type	Original Author	Original Content on Stackoverflow
Question	Kyle Hotchkiss	View Question on Stackoverflow
Solution 1 - Jquery	Christian C. Salvadó	View Answer on Stackoverflow
Solution 2 - Jquery	cletus	View Answer on Stackoverflow
Solution 3 - Jquery	tbranyen	View Answer on Stackoverflow
Solution 4 - Jquery	Salketer	View Answer on Stackoverflow

How would you compare jQuery objects?

Jquery Problem Overview

Jquery Solutions

Solution 1 - Jquery

Solution 2 - Jquery

Solution 3 - Jquery

Solution 4 - Jquery

What's the difference between IComparable & IEquatable interfaces?

What is the difference between "LINQ to Entities", "LINQ to SQL" and "LINQ to Dataset"

Attributions