EDIT: Updated for jQuery 1.8

Since jQuery 1.8 browser specific transformations will be added automatically. [jsFiddle Demo](http://jsfiddle.net/jz23ugw8/)

    var rotation = 0;

    jQuery.fn.rotate = function(degrees) {
        $(this).css({&#39;transform&#39; : &#39;rotate(&#39;+ degrees +&#39;deg)&#39;});
        return $(this);
    };

    $(&#39;.rotate&#39;).click(function() {
        rotation += 5;
        $(this).rotate(rotation);
    });

---

EDIT: Added code to make it a jQuery function.

For those of you who don&#39;t want to read any further, here you go. For more details and examples, read on. [jsFiddle Demo](http://jsfiddle.net/WhZym/5/).

    var rotation = 0;

    jQuery.fn.rotate = function(degrees) {
        $(this).css({&#39;-webkit-transform&#39; : &#39;rotate(&#39;+ degrees +&#39;deg)&#39;,
                     &#39;-moz-transform&#39; : &#39;rotate(&#39;+ degrees +&#39;deg)&#39;,
                     &#39;-ms-transform&#39; : &#39;rotate(&#39;+ degrees +&#39;deg)&#39;,
                     &#39;transform&#39; : &#39;rotate(&#39;+ degrees +&#39;deg)&#39;});
        return $(this);
    };

    $(&#39;.rotate&#39;).click(function() {
        rotation += 5;
        $(this).rotate(rotation);
    });

---

EDIT: One of the comments on this post mentioned [jQuery Multirotation](http://plugins.jquery.com/multirotation/). This plugin for jQuery essentially performs the above function with support for IE8. It may be worth using if you want maximum compatibility or more options. But for minimal overhead, I suggest the above function. It will work IE9+, Chrome, Firefox, Opera, and many others.

---

*Bobby... This is for the people who actually want to do it in the javascript. This may be required for rotating on a javascript callback.*

Here is a [jsFiddle](http://jsfiddle.net/38ZsD/).

If you would like to rotate at custom intervals, you can use jQuery to manually set the css instead of adding a class. Like [this](http://jsfiddle.net/WhZym/)! I have included both jQuery options at the bottom of the answer.

**HTML**

    &lt;div class=&quot;rotate&quot;&gt;
        &lt;h1&gt;Rotatey text&lt;/h1&gt;
    &lt;/div&gt;

**CSS**

    /* Totally for style */
    .rotate {
        background: #F02311;
        color: #FFF;
        width: 200px;
        height: 200px;
        text-align: center;
        font: normal 1em Arial;
        position: relative;
        top: 50px;
        left: 50px;
    }

    /* The real code */
    .rotated {
        -webkit-transform: rotate(45deg);  /* Chrome, Safari 3.1+ */
        -moz-transform: rotate(45deg);  /* Firefox 3.5-15 */
        -ms-transform: rotate(45deg);  /* IE 9 */
        -o-transform: rotate(45deg);  /* Opera 10.50-12.00 */
        transform: rotate(45deg);  /* Firefox 16+, IE 10+, Opera 12.10+ */
    }

**jQuery**

Make sure these are wrapped in $(document).ready

    $(&#39;.rotate&#39;).click(function() {
        $(this).toggleClass(&#39;rotated&#39;);
    });

Custom intervals

    var rotation = 0;
    $(&#39;.rotate&#39;).click(function() {
        rotation += 5;
        $(this).css({&#39;-webkit-transform&#39; : &#39;rotate(&#39;+ rotation +&#39;deg)&#39;,
                     &#39;-moz-transform&#39; : &#39;rotate(&#39;+ rotation +&#39;deg)&#39;,
                     &#39;-ms-transform&#39; : &#39;rotate(&#39;+ rotation +&#39;deg)&#39;,
                     &#39;transform&#39; : &#39;rotate(&#39;+ rotation +&#39;deg)&#39;});
    });

I am trying to create an update query and making little progress in getting the right syntax.
The following query is working:

    SELECT t.Index1, t.Index2, COUNT( m.EventType ) 
        FROM Table t
        LEFT JOIN MEvents m ON
            (m.Index1 = t.Index1 AND
             m.Index2 = t.Index2 AND
            (m.EventType =  &#39;A&#39; OR m.EventType =  &#39;B&#39;)
        ) 
        WHERE (t.SpecialEventCount IS NULL)
        GROUP BY t.Index1, t.Index2


It creates a list of triplets Index1,Index2,EventCounts. 
It only does this for case where t.SpecialEventCount is NULL. The update query I am trying to write should set this SpecialEventCount to that count, i.e. COUNT(m.EventType) in the query above. This number could be 0 or any positive number (hence the left join). Index1 and Index2 together are unique in Table t and they are used to identify events in MEvent.

How do I have to modify the select query to become an update query? I.e. something like

    UPDATE Table SET SpecialEventCount=COUNT(m.EventType).....

but I am confused what to put where and have failed with numerous different guesses.



MySQL Update query with left join and group by

I would like to use an `enum` value for a `switch` statement. Is it possible to use the `enum` values enclosed in `&quot;{}&quot;` as choices for the `switch()`&quot;?

I know that `switch()` needs an `int`eger value in order to direct the flow of programming to the appropriate `case` number. If this is the case, do I just make a variable for each constant in the `enum` statement?

I also want the user to be able to pick the choice and pass that choice to the `switch()` statement.

For example:

    cout &lt;&lt; &quot;1 - Easy, &quot;;
    cout &lt;&lt; &quot;2 - Medium, &quot;;
    cout &lt;&lt; &quot;3 - Hard: &quot;;

    enum myChoice { EASY = 1, MEDIUM = 2, HARD = 3 };

    cin &gt;&gt; ????

    switch(????)
    {
    case 1/EASY:  // (can I just type case EASY?)
        cout &lt;&lt; &quot;You picked easy!&quot;;
        break;

    case 2/MEDIUM:
        cout &lt;&lt; &quot;You picked medium!&quot;;
        break;

    case 3/HARD: // ..... (the same thing as case 2 except on hard.)

    default:
        return 0;
    }



How do I use an enum value in a switch statement in C++?

Is it possible to rotate a div using jQuery? I can rotate an image but can&#39;t rotate a div; is there any solution for this?

How to rotate a div using jQuery

<p>Is it possible to rotate a div using jQuery? I can rotate an image but can't rotate a div; is there any solution for this?</p>


I know jQuery has a helper method for parsing unit strings into numbers. What is the jQuery method to do this?

    var a = &quot;20px&quot;;
    var b = 20;
    var c = $.parseMethod(a) + b;

jQuery / Javascript - How do I convert a pixel value (20px) to a number value (20)

I have a div and it has several input elements in it... I&#39;d like to iterate through each of those elements. Ideas?

How do I iterate through children elements of a div using jQuery?

In jQuery, is there a simple way to test if *any* of a form&#39;s elements have changed?

Say I have a form and I have a button with the following `click()` event:

    $(&#39;#mybutton&#39;).click(function() {
      // Here is where is need to test
      if(/* FORM has changed */) {
         // Do something
      }
    });

How would I test if the form has changed since it was loaded?

How do you handle a form change in jQuery?

I have a jQuery UI `draggable()` that works in Firefox and Chrome. The user interface concept is basically click to create a &quot;post-it&quot; type item.

Basically, I click or tap on `div#everything` (100% high and wide) that listens for clicks, and an input textarea displays. You add text, and then when you&#39;re done it saves it. You can drag this element around. That is working on normal browsers, but on an iPad I can test with I can&#39;t drag the items around. If I touch to select (it then dims slightly), I can&#39;t then drag it. It won&#39;t drag left or right at all. I **can** drag up or down, but I&#39;m not dragging the individual `div`, I&#39;m dragging the whole webpage.

So here&#39;s the code I use to capture clicks:


	$(&#39;#everything&#39;).bind(&#39;click&#39;, function(e){
		var elem = document.createElement(&#39;DIV&#39;);
		STATE.top = e.pageY;
		STATE.left = e.pageX;
		var e = $(elem).css({
			top: STATE.top,
			left: STATE.left
		}).html(&#39;&lt;textarea&gt;&lt;/textarea&gt;&#39;)
		.addClass(&#39;instance&#39;)
		.bind(&#39;click&#39;, function(event){
			return false;
		});
		$(this).append(e);
	});

And here&#39;s the code I use to &quot;save&quot; the note and turn the input div into just a display div:

	$(&#39;textarea&#39;).live(&#39;mouseleave&#39;, function(){
		var val = jQuery.trim($(this).val());
		STATE.content = val;
		if (val == &#39;&#39;) {
			$(this).parent().remove();
		} else {
			var div  = $(this).parent();
			div.text(val).css({
				height: &#39;30px&#39;
			});
			STATE.height = 30;
			if ( div.width() !== div[0].clientWidth || div.height () !== div[0].clientHeight ) {
				while (div.width() !== div[0].clientWidth || div.height () !== div[0].clientHeight) {
					var h = div.height() + 10;
					STATE.height = h;
					div.css({
						height: (h) + &#39;px&#39;
					});     // element just got scrollbars
				}
			}
			STATE.guid = uniqueID()
			div.addClass(&#39;savedNote&#39;).attr(&#39;id&#39;, STATE.guid).draggable({
				stop: function() {
					var offset = $(this).offset();
					STATE.guid = $(this).attr(&#39;id&#39;);
					STATE.top = offset.top;
					STATE.left = offset.left;
					STATE.content = $(this).text();
					STATE.height = $(this).height();
					STATE.save();
				}
			});
			STATE.save();
			$(this).remove();
		}
	});

And I have this code when I load the page for saved notes:

	$(&#39;.savedNote&#39;).draggable({
		stop: function() {
			STATE.guid = $(this).attr(&#39;id&#39;);
			var offset = $(this).offset();
			STATE.top = offset.top;
			STATE.left = offset.left;
			STATE.content = $(this).text();
			STATE.height = $(this).height();
			STATE.save();
		}
	});

My `STATE` object handles saving the notes.

Onload, this is the whole html body:

    &lt;body&gt; 
    	&lt;div id=&quot;everything&quot;&gt;&lt;/div&gt; 
    &lt;div class=&quot;instance savedNote&quot; id=&quot;iddd1b0969-c634-8876-75a9-b274ff87186b&quot; style=&quot;top:134px;left:715px;height:30px;&quot;&gt;Whatever dude&lt;/div&gt; 
    &lt;div class=&quot;instance savedNote&quot; id=&quot;id8a129f06-7d0c-3cb3-9212-0f38a8445700&quot; style=&quot;top:131px;left:347px;height:30px;&quot;&gt;Appointment 11:45am&lt;/div&gt; 
    &lt;div class=&quot;instance savedNote&quot; id=&quot;ide92e3d13-afe8-79d7-bc03-818d4c7a471f&quot; style=&quot;top:144px;left:65px;height:80px;&quot;&gt;What do you think of a board where you can add writing as much as possible?&lt;/div&gt; 
    &lt;div class=&quot;instance savedNote&quot; id=&quot;idef7fe420-4c19-cfec-36b6-272f1e9b5df5&quot; style=&quot;top:301px;left:534px;height:30px;&quot;&gt;This was submitted&lt;/div&gt; 
    &lt;div class=&quot;instance savedNote&quot; id=&quot;id93b3b56f-5e23-1bd1-ddc1-9be41f1efb44&quot; style=&quot;top:390px;left:217px;height:30px;&quot;&gt;Hello world from iPad.&lt;/div&gt; 
     
    &lt;/body&gt;

So, my question is really: how can I make this work better on iPad? 

I&#39;m not set on jQuery UI, I&#39;m wondering if this is something I&#39;m doing wrong with jQuery UI, or jQuery, or whether there may be better frameworks for doing cross-platform/backward compatible draggable() elements that will work for touchscreen UIs.

More general comments about how to write UI components like this would be welcome as well.

Thanks!


----------

**UPDATE:**
I was able to simply chain this onto my jQuery UI `draggable()` call and get the correct draggability on iPad!

    .touch({
    	animate: false,
    	sticky: false,
    	dragx: true,
    	dragy: true,
    	rotate: false,
    	resort: true,
    	scale: false
    });

The [jQuery Touch plugin][1] did the trick!


  [1]: http://plugins.jquery.com/project/touch


How can I make a jQuery UI &#39;draggable()&#39; div draggable for touchscreen?

I&#39;m using jQuery.serialize to retrieve all data fields in a form.

My problem is that it does not retriev checkboxes that is not checked.

It includes this:
  
    &lt;input type=&quot;checkbox&quot; id=&quot;event_allDay&quot; name=&quot;event_allDay&quot; class=&quot;checkbox&quot; checked=&quot;checked&quot; /&gt;

but not this

    &lt;input type=&quot;checkbox&quot; id=&quot;event_allDay&quot; name=&quot;event_allDay&quot; class=&quot;checkbox&quot; /&gt;

  

How can I get &quot;values&quot; of checkboxes that is not checked?


Content Type	Original Author	Original Content on Stackoverflow
Question	DEVOPS	View Question on Stackoverflow
Solution 1 - Jquery	Dan Grahn	View Answer on Stackoverflow

How to rotate a div using jQuery

Jquery Problem Overview

Jquery Solutions

Solution 1 - Jquery

How do I use an enum value in a switch statement in C++?

MySQL Update query with left join and group by

Attributions