Hw could copy a unformatted text from a formated paragraph

Question

Dear all,
I am trying to copy an unformatted text from a formatted paragraph i have a code snippet, Please check it out and tell me that how can i copy a unformatted text from a paragraph. Result of this script should be a unformatted selected text...
var par = app.selection[0].paragraphs[0];
    if (app.selection[0] instanceof InsertionPoint)
        if (par.characters[-1].contents != "\r")
            par.insertionPoints[-1].contents = "\r";
            par.characters.itemByRange(app.selection[0], par.insertionPoints[-1]).select();
            app.copy();
        else
            par.characters.itemByRange(app.selection[0], par.insertionPoints[-1]).select();
            app.copy();

Answer 1

It's not the copy that 'removes' formatting, it's the paste that pastes without.
Text can exist on the clipboard in any number of internal formats. It's possible to copy InDesign formatted text and paste it into a plain text editor -- so you won't get the formatting. But if you paste the same text again in InDesign, the formatting is still there.
When copying, it's the responsibility of the copying program to put its copyable content in any useful format onto the global Clipboard.
When pasting, a program should go through the list of supplied data formats (regardless of the source) and pick whatever it thinks is best. So, apparently, the usual Paste picks up InDesign "Native objects", while "Paste w/o Formatting" uses the plain (unformatted) text form.
The only way to get an unformatted copy on the pasteboard would be to copy the string contents (raw ASCII characters) instead -- but InDesign's Javascript does not allow this. The app.copy() command only works on native InDesign objects.
So, long story short, what you need can't be done.