Jquery验证:浮点数字段，带正/负，带6位2位小数

<script src="https://cdn.jsdelivr.net/npm/jquery"></script>
<script src="https://cdn.jsdelivr.net/jquery.validation/1.16.0/jquery.validate.min.js"></script>

<input type="text" pattern="^-?\d+(\.\d{1,2})?$" id="floatInput" name="floatInput">

$(document).ready(function() {
  $("#floatInput").validate({
    rules: {
      floatInput: {
        pattern: /^-?\d+(\.\d{1,2})?$/
      }
    },
    messages: {
      floatInput: {
        pattern: "请输入正确的浮点数，最多保留两位小数"
      }
    }
  });
});

$(document).ready(function() {
  $("#floatInput").validate({
    rules: {
      floatInput: {
        pattern: /^-?\d+(\.\d{1,2})?$/
      }
    },
    messages: {
      floatInput: {
        pattern: "请输入正确的浮点数，最多保留两位小数"
      }
    },
    errorPlacement: function(error, element) {
      error.appendTo(element.parent());
    },
    submitHandler: function(form) {
      // 验证通过，可以进行提交操作
      form.submit();
    }
  });
});