Strip a comma and whitespace thats after it from a string

StuBlackett :

I'm working with a Postcode Finder and some of the address elements i.e County are returning empty at times as a ", "

I'm looking to strip them from the string to return a more readable address format

Example Data is JSON :

{
"latitude": 53.381130218505859,
"longitude": -1.4663739204406738,
"addresses": [
    "Crucible Enterprises Ltd, 55 Norfolk Street, , , , Sheffield, South Yorkshire",
    "Crucible Theatre, 55 Norfolk Street, , , , Sheffield, South Yorkshire",
    "Sheffield Crucible Productions Ltd, 55 Norfolk Street, , , , Sheffield, South Yorkshire",
    "Sheffield Theatres Crucible Trust, 55 Norfolk Street, , , , Sheffield, South Yorkshire",
    "The City Of Sheffield Theatre Trust, 55 Norfolk Street, , , , Sheffield, South Yorkshire"
]
}

As you can see there's a lot of commas and spaces directly after with no data in.

How do I go about doing this? My current code is :

$.ajax(
            {
                type: 'POST',
                url: '/address',
                dataType: 'json',
                data: { _token: token, postcode: postcode},
                success: function( data )
                {
                    $('.addresses').html('');

                    $.each(data, function(k, v)
                    {
                        address = v.replace(/\s+/g, ' ');

                        $('.addresses').append('<option value="">'+ address +'</option>');
                    })
                }
            }
        )

epascarello :

You can use a regular expression to clean them up.

var str = "Crucible Enterprises Ltd, 55 Norfolk Street, , , , Sheffield, South Yorkshire"
var cleaned = str.replace(/,(\s,)+/, ',')
console.log(cleaned)