How to assign an error message when adding css class validation rule

I have added a css class validation rule for jquery validator as follows:

jQuery.validator.addClassRules({
        requiredDatepicker: {
            required: true,
            date: true开发者_如何学运维
        }
    });

However, when doing this I get the default error messages. How can I assign custom error messages when using addClassRules()?

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See the Refactoring rules section on how to add custom messages.

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You can't do this generally with the rule set, since class rules are just combinations of basic rules (for example even required is really required: { required: true } underneath) and those have the error messages. To get custom errors you'll have to set them per-element, or use the meta-data plugin to put the rules on the element directly.