ajax prototype 修改 textbox 的值

即使textbox只读，也能通过js来修改value?
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//小区名private String chlzonename;//大区名private String chldealerarea;两个属性的 get() set()@Action(value = "checkDealCode",results={@Result(type = "json", name = SUCCESS)})public String checkDealCode(){log.info("method begin:checkDealCode()");try{if (!StrUtils.checkEmpty(chldealercode)) {log.info("method end:checkDealCode()");return SUCCESS;}ClubDealer clubDealer = clubDealerMng.getClubDealerBySalecode(chldealercode);if (clubDealer == null) {msg = "此经销商CODE不存在。";} else {chlzonename = clubDealer.getClubDealerSmallArea().getDlzonename();chldealerarea = clubDealer.getDlaname();}} catch (DataAccessException ex) {log.error("", ex);msg = ex.getMessage();} catch (BusinessAccessException ex) {log.error("", ex);msg = ex.getMessage();} catch (Exception ex) {log.error("", ex);msg = ex.getMessage();} catch (Throwable ex) {log.error("", ex);msg = ex.getMessage();}log.info("method end:checkDealCode()");return Constants.SUCCESS;}
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