In a content management system, moderators have to approve changes to existing articles. Currently the system shows the old and the revised version of the text in plain text. It is a pain to find the actual differences.
In GoogleDocs, there is a ‘Compare revisions’ feature which highlights the differences between two documents.
If there a free component out there that does the same thing?
If not, would you write such a component in JavaScript or on the server side?
All the usual diff tools are desktop applications.
John Resig wrote one in JavaScript that looks interesting.
Here it is.