jquery验证条件阻止提交

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/jquery.validate.min.js"></script>

<form id="myForm">
  <input type="text" name="username" required>
  <input type="password" name="password" required>
  <button type="submit">提交</button>
</form>

$(document).ready(function() {
  $("#myForm").validate({
    rules: {
      username: "required",
      password: {
        required: true,
        minlength: 6
      }
    },
    messages: {
      username: "请输入用户名",
      password: {
        required: "请输入密码",
        minlength: "密码长度不能少于6个字符"
      }
    },
    submitHandler: function(form) {
      // 在满足特定条件时阻止表单的提交
      if (条件判断) {
        form.submit();
      } else {
        return false;
      }
    }
  });
});