[NumLock]

Код:

WebBrowser: TWebBrowser;
Edit: TEdit;
Memo: TMemo;

(WebBrowser.Document as IHTMLDocument2).parentWindow.execScript('var r='+Edit.Text+'; document.write(r+"<br>");', 'javascript');
Memo.Lines.Insert(0, (WebBrowser.Document as IHTMLDocument2).body.innerText);