Fetching file size using CAML query in Javascript client object model

Question

Hi,
I am using the Javascript client object model to retrieve contents of a document library.
I have a document library, which contains a folder "Folder1" . "Folder1" has a zip file. I would like to get the file size of the zip file.
I have tried the below code, but not sure, how to fetch the file size.
function FetchImage() {
var clientcontext = new SP.ClientContext.get_current();
var oweb = clientcontext.get_web();
var olibrary = oweb.get_lists().getByTitle(DocLibrary);
var query = new SP.CamlQuery();
query.set_folderServerRelativeUrl("Lists/DocLibrary/folder1/");
folder = olibrary.getItems(query);
clientcontext.load(folder, 'Include(Title,ContentType, FileLeafRef,FileDirRef,File)');
clientcontext.executeQueryAsync(Function.createDelegate(this, this.RenderDataOnSuccess), Function.createDelegate(this, this.RenderDataOnFailure));
function RenderDataOnSuccess() {
var ListEnumerator = this.folder.getEnumerator();
while (ListEnumerator.moveNext()) {
var currentItem = ListEnumerator.get_current();
if (_contentType.get_name() != "Folder") {
var File = currentItem.get_file();
if (File != null) {
// Fetch file size
How to fetch the file size?
Thanks

Answer 1

<script>
function getSize()
        var myFSO = new ActiveXObject("Scripting.FileSystemObject");
        var filepath = document.upload.file.value;
        var thefile = myFSO.getFile(filepath);
        var size = thefile.size;
        alert(size + " bytes");
</script>
http://social.msdn.microsoft.com/Forums/en-US/e5d2ff3d-01c7-4cc0-a081-29a4dfbb0fad/getting-the-sharepoint-list-attachment-size-using-javascript?forum=sharepointcustomizationlegacy