[JQuery Core Style Guidelines][1] says:

&quot;Strings should always use double-quotes instead of single-quotes.&quot;

  [1]: http://contribute.jquery.org/style-guide/js/#quotes

You are allowed to use both. In JavaScript there is no difference between both (while e.g. in PHP there is a difference).

By the way, this is a JavaScript question. You are passing a string to the `$()` function, and strings have to be surrounded by `&#39;` or `&quot;`.

jQuery is JavaScript and as such emits the same behavior: Both behave the same, because both represent a string.

Is there any specific reason you think that jQuery 1.6 changed something here?

I have the below schema (apologies that it is in coffeescript)

    Schema = mongoose.Schema
    
    AuthS = new Schema
    	auth:	{type: String, unique: true}
    	nick:	String
    	time:	Date
    Auth = mongoose.model &#39;Auth&#39;, AuthS

I simply want to recover one record which is definitely in my database:

    Auth.findOne({nick: &#39;noname&#39;}, function(obj) { console.log(obj); });

Unfortunately this always logs `null`. `db.auths.findOne({nick: &#39;noname&#39;})` in mongo shell always returns a value. What is going on? 

How to use mongoose findOne

I&#39;m using `System.ComponentModel.DataAnnotations` to provide validation for my Entity Framework 4.1 project.

For example:
    
    public class Player
    {
        [Required]
        [MaxLength(30)]
        [Display(Name = &quot;Player Name&quot;)]
        public string PlayerName { get; set; }

        [MaxLength(100)]
        [Display(Name = &quot;Player Description&quot;)]
        public string PlayerDescription{ get; set; }
    }

I need to retrieve the `Display.Name` annotation value to show it in a message such as *The chosen &quot;Player Name&quot; is Frank.*

=================================================================================

Another example of why I could need to retrieve annotations:

    var playerNameTextBox = new TextBox();
    playerNameTextBox.MaxLength = GetAnnotation(myPlayer.PlayerName, MaxLength);

How can I do that?

How to retrieve Data Annotations from code? (programmatically)

&gt; **Possible Duplicate:**  
&gt; [When to Use Double or Single Quotes in JavaScript](https://stackoverflow.com/questions/242813/when-to-use-double-or-single-quotes-in-javascript)  

&lt;!-- End of automatically inserted text --&gt;

This is specifically for jQuery not JavaScript in general since I&#39;m not a JavaScript programmer and I&#39;m starting to learn jQuery.

With the release of jQuery 1.6 was there a specific change on using single or double quotes?

For example, would the following function work in jQuery 1.6?:

    $(&#39;.selector&#39;).show();

Or do I have to use double quotes?:

    $(&quot;.selector&quot;).show();

Thanks in advance for any clarification.

Single or Double quotes in jQuery

> Possible Duplicate: 
> <a href="https://stackoverflow.com/questions/242813/when-to-use-double-or-single-quotes-in-javascript" target="_blank" rel="noopener noreferrer">When to Use Double or Single Quotes in JavaScript</a>

This is specifically for jQuery not JavaScript in general since I'm not a JavaScript programmer and I'm starting to learn jQuery.
With the release of jQuery 1.6 was there a specific change on using single or double quotes?
For example, would the following function work in jQuery 1.6?:
<pre><code class="hljs language-javascript">$('.selector').show();
</code></pre>
Or do I have to use double quotes?:
<pre><code class="hljs language-javascript">$(".selector").show();
</code></pre>
Thanks in advance for any clarification.




&lt;!-- begin snippet: js hide: false console: true babel: false --&gt;

&lt;!-- language: lang-js --&gt;

    $(document).ready(function() {
      //set initial state.
      $(&#39;#textbox1&#39;).val($(this).is(&#39;:checked&#39;));

      $(&#39;#checkbox1&#39;).change(function() {
        $(&#39;#textbox1&#39;).val($(this).is(&#39;:checked&#39;));
      });

      $(&#39;#checkbox1&#39;).click(function() {
        if (!$(this).is(&#39;:checked&#39;)) {
          return confirm(&quot;Are you sure?&quot;);
        }
      });
    });

&lt;!-- language: lang-html --&gt;

    &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js&quot;&gt;&lt;/script&gt;
    &lt;input type=&quot;checkbox&quot; id=&quot;checkbox1&quot;/&gt;&lt;br /&gt;
    &lt;input type=&quot;text&quot; id=&quot;textbox1&quot;/&gt;

&lt;!-- end snippet --&gt;

Here `.change()` updates the textbox value with the checkbox status. I use `.click()` to confirm the action on uncheck. If the user selects cancel, the checkmark is restored but `.change()` fires before confirmation.

This leaves things in an inconsistent state and the textbox says false when the checkbox is checked.

How can I deal with the cancellation and keep textbox value consistent with the check state?

jQuery checkbox change and click event

I love that [CoffeeScript compiles `==` into the JavaScript `===` operator][1]. But what if you want the original JS `==` semantics? Are they available? I&#39;ve pored over the documentation and can&#39;t find anything enabling this.

More generally, is there a way to inline plain JS into my CoffeeScript code so that the compiler doesn&#39;t touch it?

I&#39;d prefer to avoid editing the compiled JavaScript output, since I&#39;m using [Chirpy][2] to auto-generate it in Visual Studio.


  [1]: http://coffeescript.org/#operators
  [2]: http://chirpy.codeplex.com/

Does CoffeeScript allow JavaScript-style == equality semantics?

What is the more efficient way to insert an array inside another array. 

    a1 = [1,2,3,4,5];
    a2 = [21,22];

    newArray - a1.insertAt(2,a2) -&gt; [1,2, 21,22, 3,4,5];


Iterating a2 using splice looks a bit awfull from a performance point of view if a2 array is large.

Thanks.

Javascript - insert an array inside another array

I am in process of learning and using Backbone.js.

I have an Item model and a corresponding Item view.
Each model instance has item_class and item_id attributes, that I want to be reflected in as the &#39;id&#39; and &#39;class&#39; attributes of the corresponding view.
What&#39;s the correct way to achieve this ?  

Example:

&lt;!-- language: lang-js --&gt;
 
    var ItemModel = Backbone.Model.extend({      
    });

    var item1 = new ItemModel({item_class: &quot;nice&quot;, item_id: &quot;id1&quot;});
    var item2 = new ItemModel({item_class: &quot;sad&quot;, item_id: &quot;id2&quot;});

    var ItemView = Backbone.View.extend({       
    });

How should I implement the view so that the the views &#39;el&#39;s will translate to:

&lt;!-- language-all: lang-html --&gt;

    &lt;div id=&quot;id1&quot; class=&quot;nice&quot;&gt;&lt;/div&gt;
    &lt;div id=&quot;id2&quot; class=&quot;sad&quot;&gt; &lt;/div&gt;

     
In most examples I have seen, the view&#39;s &lt;b&gt;el&lt;/b&gt; serves as a meaningless wrapper element inside which one has to manually write the &#39;semantic&#39; code.

&lt;!-- language: lang-js --&gt;

    var ItemView = Backbone.View.extend({
       tagName:  &quot;div&quot;,   // I know it&#39;s the default...

       render: function() {
         $(this.el).html(&quot;&lt;div id=&quot;id1&quot; class=&quot;nice&quot;&gt; Some stuff &lt;/div&gt;&quot;);
       }       
    });

So when rendered, one gets 

    &lt;div&gt; &lt;!-- el wrapper --&gt;
        &lt;div id=&quot;id1&quot; class=&quot;nice&quot;&gt; Some stuff &lt;/div&gt;
    &lt;/div&gt;

But this seems like a waste - why have the external div ?  I want the &lt;b&gt;el&lt;/b&gt; to translate directly into the internal div!



Setting id and className dynamically in Backbone.js views

I would like to split a very large string (let&#39;s say, 10,000 characters) into N-size chunks.

What would be the best way in terms of performance to do this?

For instance:
`&quot;1234567890&quot;` split by 2 would become `[&quot;12&quot;, &quot;34&quot;, &quot;56&quot;, &quot;78&quot;, &quot;90&quot;]`.

Would something like this be possible using [`String.prototype.match`](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/String/match) and if so, would that be the best way to do it in terms of performance?


Split large string in n-size chunks in JavaScript

I have a slideshow div, and I have a datepicker field above that div.

When I  click in the datepicker field, the datepicker panel show behind slideshow div.

And I have put the  script as:

http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.14/jquery-ui.min.js

So I cannot change the z-index of datepicker in CSS. The z-index of datepicker which the script is generating is 1 and my slideshow div(also calling thru googleajaxapi) z-index is 5. So I guess I have to increase the z-index of date picker greater than 5. So is there any way to increase it ?

Someone can help me?

Jquery date picker z-index issue

Is it possible to tell whether a scroll event was done by the browser or by the user? Specifically, when using the back button a browser may jump to the last known scroll position. If I bind to scroll event how can I tell whether this was caused by user or browser? 

    $(document).scroll( function(){ 
        //who did this?!
    });

I see three types of situations that cause scrolling in a browser.

1. The user performs some action. For example, uses mousewheel, arrow keys, page up/down keys, home/end keys, clicks the scrollbar or drags its thumb.
2. The browser scrolls automatically. For example, when using the back button in your browser it will jump to the last known scroll position automatically.
3. Javascript scrolls. For example, `element.scrollTo(x,y)`.

Detect whether scroll event was created by user

How can I add text from a DIV to a textarea?

I have this now:

        $(&#39;.oquote&#39;).click(function() { 
          $(&#39;#replyBox&#39;).slideDown(&#39;slow&#39;, function() {
          var quote = $(&#39;.container&#39;).text();   
             $(&#39;#replyBox&#39;).val($(&#39;#replyBox&#39;).val()+quote);   
            // Animation complete.
          });    
        });

Add text to textarea - Jquery

I&#39;m trying to do a function if enter is pressed while on specific input.

What I&#39;m I doing wrong?

    $(document).keyup(function (e) {
    	if ($(&quot;.input1&quot;).is(&quot;:focus&quot;) &amp;&amp; (e.keyCode == 13)) {
    		// Do something
    	}
    });

Is there a better way of doing this which would say, if enter pressed on `.input1` do function?

Content Type	Original Author	Original Content on Stackoverflow
Question	Ricardo Zea	View Question on Stackoverflow
Solution 1 - Javascript	Frink	View Answer on Stackoverflow
Solution 2 - Javascript	js-coder	View Answer on Stackoverflow
Solution 3 - Javascript	Michael Stum	View Answer on Stackoverflow

Single or Double quotes in jQuery

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Solution 2 - Javascript

Solution 3 - Javascript

How to retrieve Data Annotations from code? (programmatically)

How to use mongoose findOne

Attributions