Javascript function for converting a datetime object to a specific format

Chances are very good that at some point during your journey with SharePoint 2013 you're going to need a javascript function that you can use for converting a datetime object into a nice, user-friendly output string for display purposes.  In the code sample I'm about to provide, the javascript function will return an output string that matches the following format:

Wednesday, 7/13/2013

Here's the basic function that will give you the output presented above:

function getDateString(dateTime) {
 var weekday=new Array();
 weekday[0]="Sunday";
 weekday[1]="Monday";
 weekday[2]="Tuesday";
 weekday[3]="Wednesday";
 weekday[4]="Thursday";
 weekday[5]="Friday";
 weekday[6]="Saturday";

 var dayOfWeek = weekday[dateTime.getDay()];
 var month = dateTime.getMonth() + 1;
 var day = dateTime.getDate();
 var year = dateTime.getFullYear();

 return dayOfWeek + ', ' + month + '/' + day + '/' + year;
}

Good solution for evaluating your web applications on various mobile devices - Ripple Emulator

If you're looking for a quick and easy solution for being able to evaluate the look and feel of your web applications or SharePoint sites across various mobile devices, the Ripple Emulator add-on for Chrome (created by the folks at tinyHippos) is definitely a great tool to have in your toolbox.  Once you activate/enable the add-on against a targeted page of a site, it will allow you to quickly select a target device and instantly view the layout of your page as it would appear on that device.

For SharePoint 2013 device channels, one important note is that the user agent being posted by the emulator doesn't match the device (at least at the time of this writing); therefore, you'll want to specify the channel to use by appending the following line at the end of URL in your browser's address bar:

?DeviceChannel=DeviceUserAgent

An example would be as follows:

http://SPWebApplication/Sites/Site/default.aspx?DeviceChannel=iPhone

Obtain all files contained under folders and subfolders within a SharePoint Document Library

If you are looking for a way to programmatically return all documents of a specific content type located within a given SharePoint Document Library regardless of whether they are contained in folders and subfolders within the given library, I've provided the following sample method that will allow you to do just that:

private SPListItemCollection GetDocumentsByContentType(SPList docLibrary, string contentTypeName)
{
    SPQuery query = new SPQuery();
    query.ViewAttributes = "Scope=\"RecursiveAll\"";
    SPListItemCollection documents = null;
    try
    {
        query.Query = string.Format("<where><eq><fieldref name="ContentType"><value type="Text">{0}</value></fieldref></eq></where>", contentTypeName);
        documents = docLibrary.GetItems(query);
    }
    catch (Exception ex)
    {
        throw ex;
    }
    return documents;
}

The key to this code being able to return all documents, including documents contained under folders and subfolders, is that I've set the ViewAttributes property to be Scope="RecursiveAll".  Without this particular setting, the query would have only returned items that were located immediately under the SharePoint Document Library and would have skipped any documents contained under folders and subfolders.