Get the content type by id in SharePoint 2010 using ECMAScript

Get the content type by id in SharePoint 2010 using ECMAScript
 
In this article you will see how to get the content type by id in SharePoint 2010 using ECMAScript.
 
Introduction:
 
In this article you will see how to get the content type by id in SharePoint 2010 using ECMAScript. I have a content type named “Custom Content Type” that belongs to “Custom Content Types” group (Navigate to the site, click on Site Actions. Click on Site Settings. In the Galleries section, click on Site Content Types).
 

 
Steps Involved:
 
1.  Navigate to the SharePoint site (I have a site page created in my site where I am going to add the content editor web part).
2.  Go to Site Actions, click on Edit Page.
 

 
3.  Click on Insert tab in the ribbon interface and then click on Web Part button.
 

 
4.  Select Media and Content in the Categories section and then click on Content Editor.
 

 
5.  Click on Add.
6.  Content editor web part will be added to the site page.
7.  Click on down arrow and then click on Edit Web Part.
 

 
8.  Click on “Click here to add new content”.
 

 
9.  Click on Format Text tab in the ribbon interface and then click on HTML drop down.
 

 
10.  Click on Edit HTML source.
11.  HTML source window will pop up.
 

 
12.  Copy and paste the following script.
 

<script language="ecmascript" type="text/ecmascript">     var contentTypeCollection;   var contentType;     function getContentTypebyId() {   var clientContext = new SP.ClientContext.get_current();   if (clientContext != undefined && clientContext != null) {    var web = clientContext.get_web();   this.contentTypeCollection = web.get_contentTypes();   this.contentType = contentTypeCollection.getById("0x0100FFC434A461E47E4EB81D3FD76D42BFBF");   clientContext.load(this.contentType);   clientContext.executeQueryAsync(Function.createDelegate(this, this.onQuerySucceeded), Function.createDelegate(this, this.onQueryFailed));   }   }     function onQuerySucceeded() {   alert(this.contentType.get_name())   }     function onQueryFailed(sender, args) {   alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace());   }</script>   <input id="btnGetContentTypebyId" onclick="getContentTypebyId()" type="button" value="Get content type by Id" />

 
13.  Click on Ok.
14.  In the ribbon interface click on Save & Close button.
 

 
15.  In the content editor web part you could find a button named “Get content type by id”, click on that button.
 

 
16.  Alert will pop up displaying the content type name as shown in the following
 

 
17.  Go to Site Actions, click on Site Settings. In the Galleries section, click on Site Content Types.
 
 
Reference:

SP.ContentTypeCollection.getbyid Property - http://msdn.microsoft.com/en-us/library/ee659536.aspx

 
Summary:
 
Thus in this article you have seen how to get the content type by id in SharePoint 2010 using ECMAScript.