grid fails to display when \ is used in grid data

My client entered the "\" character in some data captured by my application. When displaying the data in the grid the grid would not display. Is this a grid design issue, or a javascript issue? The actual data in the cell was "Richard\" with out the quote marks.

Do I need to filter out this character when saving my data?

"\" is a 'control' character in javascript strings - it is used to 'escape' quotes, newline and other special chars, so you have to replace it with \\ when you generate javascript code on the server.