That is in this css element:

    .ui-widget-overlay {
       background: #AAA url(images/ui-bg_flat_0_aaaaaa_40x100.png) 50% 50% repeat-x;
       opacity: .30;
       filter: Alpha(Opacity=30);
    }

it is on line 294 of: [`jquery-ui-1.8.11.custom.css`](http://www.medicetics.com/DialogMedicetics/css/smoothness/jquery-ui-1.8.11.custom.css)

Add this CSS to your stylesheet:

    .ui-widget-overlay
    {
      opacity: .50 !important; /* Make sure to change both of these, as IE only sees the second one */
      filter: Alpha(Opacity=50) !important;
      
      background: rgb(50, 50, 50) !important; /* This will make it darker */
    }

Easiest way is to use the [themeroller][1].


  [1]: http://jqueryui.com/themeroller/

Like @spinlock I have the strip that run horizontally : 


To remove the strip and use a custom background color you can do like this on the open event : 

    open : function(event, ui){
        $(&quot;body&quot;).css({
            overflow: &#39;hidden&#39;
        });
        $(&quot;.ui-widget-overlay&quot;).css({
            background:&quot;rgb(0, 0, 0)&quot;,
            opacity: &quot;.50 !important&quot;,
            filter: &quot;Alpha(Opacity=50)&quot;,
        });
    },
    beforeClose: function(event, ui) {
        $(&quot;body&quot;).css({ overflow: &#39;inherit&#39; })
    }





What actually worked for me :

    //in dialog setting code
    open: function(event, ui) {
      $(&#39;.ui-widget-overlay&#39;).css({ opacity: &#39;.5&#39; });
    },

&gt; I will not suggest to setup opacity for a dialog directly in CSS, as it will affect
&gt; any dialog open across your website, which may not be a desired result.

I had spinlock&#39;s problem with Blender&#39;s solution, but changing &quot;background-color&quot; to &quot;background&quot; fixed that. I suspect the reason is that the original (jQuery-UI) CSS uses that PNG graphic.


**Preamble**

I&#39;m using git as a version control system for a paper that my lab is writing, in LaTeX. There are several people collaborating.

I&#39;m running into git being stubborn about how it merges. Let&#39;s say two people have made single-word changes to a line, and then attempt to merge them. Though git diff --word-diff seems capable of SHOWING the difference between the branches word-by-word, git merge seems unable to perform the merge word-by-word, and instead requires a manual merge.

With a LaTeX document this is particularly annoying, as the common habit when writing LaTeX is to write a full paragraph per line and just let your text editor handle word wrapping when displaying for you. We are working around for now by adding a newline for each sentence, so that git can at least merge changes on different sentences within a paragraph. But it will still get confused about multiple changes within a sentence, and this makes the text no longer wrap nicely of course.

**The Question**

Is there a way to git merge two files &quot;word by word&quot; rather than &quot;line by line&quot;?

Git merging within a line

I want to do a data denormalization for better performance, and put a sum of votes my blog post receives inside Post model:

    class Post(models.Model):
        &quot;&quot;&quot; Blog entry &quot;&quot;&quot;
        author          = models.ForeignKey(User)
        title           = models.CharField(max_length=255)
        text            = models.TextField()
        rating          = models.IntegerField(default=0) # here is the sum of votes!
    
    class Vote(models.Model):
        &quot;&quot;&quot; Vote for blog entry &quot;&quot;&quot;
        post            = models.ForeignKey(Post)
        voter           = models.ForeignKey(User)
        value           = models.IntegerField()

Ofcourse, I need to keep `Post.rating` value actual. Nornally I would use database triggers for that, but now I&#39;ve decided to make a `post_save` signal (to reduce database process time):

    # vote was saved
    @receiver(post_save, sender=Vote)
    def update_post_votes(sender, instance, created, **kwargs):
        &quot;&quot;&quot; Update post rating &quot;&quot;&quot;
        if created:
            instance.post.rating += instance.value
            instance.post.save()
        else:
            # if vote was updated, we need to remove the old vote value and add the new one
            # but how...?

How can I access the instance value before it was saved? In database triggers, i would have `OLD` and `NEW` predefines for this, but is there something like this in post_save signals?

**UPDATE**

The solution based on Mark&#39;s the answer:

    # vote was saved
    @receiver(pre_save, sender=Vote)
    def update_post_votes_on_save(sender, instance, **kwargs):
        &quot;&quot;&quot; Update post rating &quot;&quot;&quot;
        # if vote is being updated, then we must remove previous value first
        if instance.id:
            old_vote = Vote.objects.get(pk=instance.id)
            instance.post.rating -= old_vote.value
        # now adding the new vote
        instance.post.rating += instance.value
        instance.post.save()



Django: How to access original (unmodified) instance in post_save signal

When I load the dialog the background gets a little bit grey. I would like to make it darker, but I cannot find a property that is responsible for that. How can I achieve this? 

Set JQuery UI modal dialog overlay background color

<p>When I load the dialog the background gets a little bit grey. I would like to make it darker, but I cannot find a property that is responsible for that. How can I achieve this?</p>


I&#39;m trying to make a Cross Origin post request, and I got it working in plain `JavaScript` like this:

    var request = new XMLHttpRequest();
    var params = &quot;action=something&quot;;
    request.open(&#39;POST&#39;, url, true);
    request.onreadystatechange = function() {if (request.readyState==4) alert(&quot;It worked!&quot;);};
    request.setRequestHeader(&quot;Content-type&quot;, &quot;application/x-www-form-urlencoded&quot;);
    request.setRequestHeader(&quot;Content-length&quot;, params.length);
    request.setRequestHeader(&quot;Connection&quot;, &quot;close&quot;);
    request.send(params);
   

But I would like to use `jQuery`, but I can&#39;t get it to work. This is what I&#39;m trying:

    $.ajax(url, {
        type:&quot;POST&quot;,
        dataType:&quot;json&quot;,
        data:{action:&quot;something&quot;}, 
        success:function(data, textStatus, jqXHR) {alert(&quot;success&quot;);},
        error: function(jqXHR, textStatus, errorThrown) {alert(&quot;failure&quot;);}
    });

This results in Failure. If anyone knows why `jQuery` doesn&#39;t work, please let us all know. Thanks.

(I&#39;m using `jQuery` 1.5.1, and Firefox 4.0, and my server is responding with a proper `Access-Control-Allow-Origin` header)

A CORS POST request works from plain JavaScript, but why not with jQuery?

I want to disable my submit button until all the fields have values..
how can I do that?

    &lt;html&gt;
    	&lt;head&gt;
    		&lt;title&gt;&lt;/title&gt;
    		&lt;style type=&quot;text/css&quot;&gt;
    		&lt;/style&gt;
    		&lt;script type=&quot;text/javascript&quot; src=&quot;https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js&quot;&gt;&lt;/script&gt;
    		&lt;script type=&quot;text/javascript&quot;&gt;
    		$(document).ready(function() {
    			$(&#39;#register&#39;).attr(&quot;disabled&quot;, true);
    		});
    		&lt;/script&gt;
    	&lt;/head&gt;
    	&lt;body&gt;
    		&lt;form&gt;
    		Username&lt;br /&gt;
    		&lt;input type=&quot;text&quot; id=&quot;user_input&quot; name=&quot;username&quot; /&gt;&lt;br /&gt;
    		Password&lt;br /&gt;
    		&lt;input type=&quot;text&quot; id=&quot;pass_input&quot; name=&quot;password&quot; /&gt;&lt;br /&gt;
    		Confirm Password&lt;br /&gt;
    		&lt;input type=&quot;text&quot; id=&quot;v_pass_input&quot; name=&quot;v_password&quot; /&gt;&lt;br /&gt;
    		Email&lt;br /&gt;
    		&lt;input type=&quot;text&quot; id=&quot;email&quot; name=&quot;email&quot; /&gt;&lt;br /&gt;		
    		&lt;input type=&quot;submit&quot; id=&quot;register&quot; value=&quot;Register&quot; /&gt;
    		&lt;/form&gt;
    		&lt;div id=&quot;test&quot;&gt;
    		&lt;/div&gt;
    	&lt;/body&gt;
    &lt;/html&gt;



Disabling submit button until all fields have values

Just wondered how I would search for all the ids starting with &quot;content_&quot; in the whole page and also a way to only find them in a named div called &quot;extra_content&quot;. Once i have all the ids i want to hide them.

Below is an example of what i want to find.

    &lt;div id=&quot;content_1&quot;&gt;&lt;/div&gt; &lt;-- Find
    &lt;div id=&quot;content_2&quot;&gt;&lt;/div&gt; &lt;-- Find
    &lt;div id=&quot;contet_3&quot;&gt;&lt;/div&gt;

    &lt;div id=&quot;extra_content&quot;&gt; 
        &lt;div id=&quot;content_extra_1&quot;&gt;&lt;/div&gt; &lt;-- Find
        &lt;div id=&quot;content_extra_2&quot;&gt;&lt;/div&gt; &lt; -- Find
    &lt;/div&gt;

Examples would be helpful.

Thanks

Jquery find all ids starting with a string?

How do I transpose a string to lowercase using jQuery? I&#39;ve tried

    var jIsHasKids = $(&#39;#chkIsHasKids&#39;).attr(&#39;checked&#39;).toLowerCase();

but it doesn&#39;t work. What am I doing wrong?

Lowercase and Uppercase with jQuery

How do I get the action url from a form with jquery?

Get a form action/url with jquery

I have implemented a jQuery UI Autocomplete box, and rather than being the width of the textbox, the dropdown options are expanding to fill the remaining width of the page.

Have a look at this example to see it for yourself: http://jsbin.com/ojoxa4

I have tried setting the width of the list immediately after creating it, like so:

    $(&#39;.ui-autocomplete:last&#39;).css(&#39;width&#39;,
                                   $(&#39;#currentControlID&#39;).width()
                                  );

This appears to do nothing.

I have also tried setting the width using on-page styles:

    ui-autocomplete { width: 500px; }

This DOES work, amazingly, however it would mean that all autocompletes on a page would have to be the same width, which is not ideal.

Is there a way to set the width of each menu individually? Or better, can anyone explain why the widths are not working correctly for me?

jQuery UI Autocomplete Width Not Set Correctly

I have a draggable item which if not dropped in a droppable will revert. This works well until a user drops an item in the droppable. If they decide they&#39;ve made a mistake anytime they pull the draggable out it reverts to the droppable. I would prefer that on out and deactivate the draggable goes back to its original container.

My code is below but I have provided [a sample on jsFiddle][1].

HTML

    &lt;div id=&quot;origin&quot;&gt;
        &lt;div id=&quot;draggable&quot; class=&quot;ui-widget-content&quot;&gt;
            &lt;p&gt;I revert when I&#39;m not dropped&lt;/p&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;div id=&quot;droppable&quot; class=&quot;ui-widget-header&quot;&gt;
        &lt;p&gt;Drop me here&lt;/p&gt;
    &lt;/div&gt;

JavaScript

    $(function() {
        $(&quot;#draggable&quot;).draggable({ 
            revert:  function(dropped) {
               var dropped = dropped &amp;&amp; dropped[0].id == &quot;droppable&quot;;
               if(!dropped) alert(&quot;I&#39;m reverting!&quot;);
               return !dropped;
            } 
        }).each(function() {
            var top = $(this).position().top;
            var left = $(this).position().left;
            $(this).data(&#39;orgTop&#39;, top);
            $(this).data(&#39;orgLeft&#39;, left);
        });
    
        $(&quot;#droppable&quot;).droppable({
            activeClass: &#39;ui-state-hover&#39;,
            hoverClass: &#39;ui-state-active&#39;,
            drop: function(event, ui) {
                $(this).addClass(&#39;ui-state-highlight&#39;).find(&#39;p&#39;).html(&#39;Dropped!&#39;);
            },
            out: function(event, ui) {
                    // doesn&#39;t work but something like this
                    ui.draggable.mouseup(function () {
                    var top = ui.draggable.data(&#39;orgTop&#39;);
                    var left = ui.draggable.data(&#39;orgLeft&#39;);
                    ui.position = { top: top, left: left };
                });
            }
        });
    });


  [1]: http://jsfiddle.net/sTD8y/1/

Revert a jQuery draggable object back to its original container on out event of droppable

I&#39;m using jQuery [draggable][1] and [droppable][2] for a work-planning system I&#39;m developing. Users drag jobs to a different day or user, and then data is updated using an ajax call.

Everything works fine, except when I scroll down the main page (Jobs appear on a large week planner that exceeds the bottom of my browser window). If I try and drag a draggable element here, the element appears above my mouse cursor the same amount of pixels as I&#39;ve scrolled down.. The hover state still works fine and the functionality is bang on but it doesn&#39;t look right. 

I&#39;m using jQuery 1.6.0 and jQuery UI 1.8.12.

I&#39;m sure there&#39;s a offset function I need to add but I don&#39;t know where to apply it, or if there&#39;s a better way. Here&#39;s my `.draggable()` initialisation code:

    $(&#39;.job&#39;).draggable({
      zIndex: 20,
      revert: &#39;invalid&#39;,
      helper: &#39;original&#39;,
      distance: 30,
      refreshPositions: true,
    });

Any idea what I can do to fix this?


  [1]: https://jqueryui.com/draggable/
  [2]: https://jqueryui.com/droppable/

jQuery draggable shows helper in wrong place after page scrolled

I&#39;m using Ruby on Rails (Edge, the development version), and Ruby rvm 1.9.2.

`application.js` is as follows.

    //= require jquery
    //= require jquery-ui
    //= require jquery_ujs
    //= require_tree 

Where is the right place in Ruby on Rails 3.1 to put the [jQuery UI][2] theme?

According to *[Autocomplete fields in Ruby on Rails 3.1 with jQuery UI][1]* I should put a jQuery UI theme in vendor/assets/stylesheets folder. That sounds like a smart place to have it, but I don&#39;t get it to work :-(.

I managed to get the CSS loaded by putting it in the assets/stylesheets folder, but the images I havn&#39;t managed to get loaded.

I could of course be using the old way with just putting the theme in the public/stylesheets/ folder, and using:

    &lt;%= stylesheet_link_tag &quot;jquery/ui-lightness/jquery-ui-1.8.11.custom&quot; %&gt;

in application.html.erb, but trying to be a modern man, I would rather use the new way of doing tings :-).

  [1]: http://babinho.net/2011/05/autocomplete-fields-in-rails-3-1-with-jquery-ui/
  [2]: http://en.wikipedia.org/wiki/JQuery_UI


Ruby on Rails 3.1 and jQuery UI images

I&#39;m running a dialog box upon user leaving the page.  The only thing is it runs for 1 sec and disappears?  I know it has to do with `bind(&#39;beforeunload&#39;)`, but the dialog dies sooner than you can read it.

How do I stop this from happening?

    $(document).ready(function() {	
						   
		// Append dialog pop-up modem to body of page
		$(&#39;body&#39;).append(&quot;&lt;div id=&#39;confirmDialog&#39; title=&#39;Confirm&#39;&gt;&lt;p&gt;&lt;span class=&#39;ui-icon ui-icon-alert&#39; style=&#39;float:left; margin:0 7px 20px 0;&#39;&gt;&lt;/span&gt;Are you sure you want to leave &quot; + brandName + &quot;? &lt;br /&gt; Your order will not be saved.&lt;/p&gt;&lt;/div&gt;&quot;);
		
		// Create Dialog box
		$(&#39;#confirmDialog&#39;).dialog({
		  autoOpen: false,
		  modal: true,
		  overlay: {
			backgroundColor: &#39;#000&#39;,
			opacity: 0.5
		  },
		  buttons: {
			&#39;I am sure&#39;: function() {
			  var href = $(this).dialog(&#39;option&#39;, &#39;href&#39;, this.href);
			  window.location.href = href;
			},
			&#39;Complete my order&#39;: function() {
			  $(this).dialog(&#39;close&#39;);
			}
		  }
		});
		
		// Bind event to Before user leaves page with function parameter e
		$(window).bind(&#39;beforeunload&#39;, function(e) {	
			// Mozilla takes the
			var e = $(&#39;#confirmDialog&#39;).dialog(&#39;open&#39;).dialog(&#39;option&#39;, &#39;href&#39;, this.href);
			// For IE and Firefox prior to version 4
			if (e){
				$(&#39;#confirmDialog&#39;).dialog(&#39;open&#39;).dialog(&#39;option&#39;, &#39;href&#39;, this.href);
			}
			// For Safari
			e.$(&#39;#confirmDialog&#39;).dialog(&#39;open&#39;).dialog(&#39;option&#39;, &#39;href&#39;, this.href);
		});	
			
		// unbind function if user clicks a link
		$(&#39;a&#39;).click(function(event) {
			$(window).unbind();
		 	//event.preventDefault();
			//$(&#39;#confirmDialog&#39;).dialog(&#39;option&#39;, &#39;href&#39;, this.href).dialog(&#39;open&#39;);
		});
		
		// unbind function if user submits a form
		$(&#39;form&#39;).submit(function() {
			$(window).unbind();
		});
    });

Content Type	Original Author	Original Content on Stackoverflow
Question	Vonder	View Question on Stackoverflow
Solution 1 - Jquery	Naftali	View Answer on Stackoverflow
Solution 2 - Jquery	Blender	View Answer on Stackoverflow
Solution 3 - Jquery	nfechner	View Answer on Stackoverflow
Solution 4 - Jquery	bedomon	View Answer on Stackoverflow
Solution 5 - Jquery	MaxZoom	View Answer on Stackoverflow
Solution 6 - Jquery	David M. Anderson	View Answer on Stackoverflow

Set JQuery UI modal dialog overlay background color

Jquery Problem Overview

Jquery Solutions

Solution 1 - Jquery

Solution 2 - Jquery

Solution 3 - Jquery

Solution 4 - Jquery

Solution 5 - Jquery

Solution 6 - Jquery

Django: How to access original (unmodified) instance in post_save signal

Git merging within a line

Attributions