<script>
	function createFile()
	{
		var fileName;
		fileName= prompt("Please enter file name:");
		if (fileName != null )
		{
			if(fileName.trim()=="")
			{
				alert("File name must have some value");
			}
			else
			{

				alert("File is created");
				jQuery.ajax(
				{
					type: "POST",
					url: 'database_connections.php',
					dataType: 'json',
					data: {functionname: 'add', arguments: [fileName]},

					success: function (obj, textstatus)
					{
					  if( !('error' in obj) )
					  {
						 var yourVariable = obj.result;
					  }
					  else {
						  console.log(obj.error);
					  }
					}
				});
				alert("File is created");
			}
		}
	}
</script>