如果包括其他方法文件，则为1.7的当前文件:

If you include the additional methods file, here's the current file for 1.7: http://ajax.microsoft.com/ajax/jquery.validate/1.7/additional-methods.js

您可以使用lettersonly规则:)其他方法是您下载的zip文件的一部分，您始终可以找到最新的

You can use the lettersonly rule :) The additional methods are part of the zip you download, you can always find the latest here.

这是一个例子:

$("form").validate({
  rules: {
    myField: { lettersonly: true }
  }
});

值得注意的是，每个其他方法都是独立的，您可以包括该特定方法，只需将其放在您的.validate()调用之前:

It's worth noting, each additional method is independent, you can include that specific one, just place this before your .validate() call:

jQuery.validator.addMethod("lettersonly", function(value, element) {
  return this.optional(element) || /^[a-z]+$/i.test(value);
}, "Letters only please");