socialforge/app/views/exercise/student_exercise_list.js.erb

$("#exercise_student_work_list").html("<%= escape_javascript(render :partial => 'exercise/student_exercise') %>");
$("#export_student_work").replaceWith("<%= escape_javascript( link_to "导出成绩", student_exercise_list_exercise_path(@exercise.id,:course_id => @course.id, :group => @select_group, :name => @name, :format => 'xls'),:class=>'linkBlue', :id => 'export_student_work') %>");