xss - How to prevent cross site script attacks using javascript -


in application, have used excel grid using mvc3. faced cross site scripting attack issue while testing in grid typing 'alert('hack')' in grid cell input textbox. results in executing script , alert displaying. how can avoid executing scripts using javascript?

if that's needed in order inject code grid must using 'eval' - unless comfortably accomodate arithemetic expressions , cell references in grid (and have capability implement filtering) can't solve problem.


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