Jquery IE9预期的标识符、字符串或数字错误

我在IE9中得到了上述错误，我不明白为什么会发生这种情况。我试图找到解决这个问题的方法，但我已经走到了死胡同。有人能指出我哪里出错了吗。起初我以为这可能是最后一个逗号，但事实并非如此。谢谢

jquery代码

$.validator.setDefaults ({

        errorClass: 'form_error',
        errorElement: 'div'
    });

    $("#BA_boxform").validate({
        rules: {
            BA_customer: {
                required: true
            },
            customerdept: {
                required: true
            },
            customeraddress: {
                required: true
            },
            BA_service: {
                required: true
            },
            BA_box: {
                required: true
            },
            BA_destdate: {
                required: true
            },
            BA_authorised: {
                required: true
            }
        },
        messages: {
            BA_customer: {
                required: '<br />* required: You must select a customer'
            },
            customerdept: {
                required: "<br />* required: You must select a department"
            },
            customeraddress: {
                required: "<br />* required: You must select a customer address"
            },
            BA_service: {
                required: "<br />* required: You must select a service level"
            },
            BA_box: {
                required: "<br />* required: You must enter a box number for intake"
            },
            BA_destdate: {
                required: "<br />* required: You must enter a destruction date"
            },
            BA_authorised: {
                required: "<br />* required"
            } **<--- error is reported here**
        },
    });

删除消息中的逗号属性。数组中的最后一个元素不应包含逗号，否则IE将抛出错误

$("#BA_boxform").validate({
   rules: {
      // rules
   },
   messages : {
      // messages.
   }, // REMOVE THE TRAILING COMMA
});

应改为

$("#BA_boxform").validate({
   rules: {
      // rules
   },
   messages : {
      // messages.
   }
});

删除消息中的逗号属性。数组中的最后一个元素不应包含逗号，否则IE将抛出错误

$("#BA_boxform").validate({
   rules: {
      // rules
   },
   messages : {
      // messages.
   }, // REMOVE THE TRAILING COMMA
});

应改为

$("#BA_boxform").validate({
   rules: {
      // rules
   },
   messages : {
      // messages.
   }
});

---

问题在于尾随逗号：

        } **<--- error is reported here**
    }, <--- problem is here

---

问题在于尾随逗号：

        } **<--- error is reported here**
    }, <--- problem is here

删除最后一个逗号。它应该可以正常工作

---

删除最后一个逗号。它应该可以正常工作。

为什么此验证在IE7/8中不起作用。九点钟天气很好/10@user1532468因为IE7/8对待无效JSON的方式与IE9+不同，所以为什么这种验证在IE7/8中不起作用。九点钟天气很好/10@user1532468因为IE7/8对待无效JSON的方式与IE9不同+