如何验证3个字段中的日期输入? [英] How to validate date input in 3 fields?

问题描述

我有3个字段用于输入日期:

I have 3 fields for date input:

<input type="text" id="passport-doi-1" name="passport-doi-1" placeholder="DD" maxlength="2">
<input type="text" id="passport-doi-2" name="passport-doi-2" placeholder="MM" maxlength="2">
<input type="text" id="passport-doi-3" name="passport-doi-3" placeholder="YYYY" maxlength="4">

我应该如何使用jQuery Validate插件验证如果输入了日期，那么这是正确的吗?

How should I validate with jQuery Validate plugin that if date is input, then this is correct?

好像我应该创建字段的groups(只有一条错误消息)，然后创建自定义验证规则.但是它应该是什么样子?

Looks like I should create groups of fields (to have only one error message) and then custom validation rule. But how it should look like?

更新.我尝试执行以下操作，但是不起作用:

Upd. I've tried to do the following, but it doesn't work:

$.validator.addMethod('validDate', function (value, element) {
  var dd = $("#passport-doi-dd").val();
  var mm = $("#passport-doi-mm").val();
  var yyyy = $("#passport-doi-yyyy").val();
  if (dd=="" && mm=="" && yyyy=="") return true;
  try {
    var date = new Date(yyyy,mm-1,dd,0,0,0,0);
    return mm===(date.getMonth()+1) && dd===date.getDate() && yyyy===date.getFullYear();
  }
  catch(er) {
    return false;
  }
}, 'Please use format DD MM YYYY.');

  ...
  rules: {
    "passport-doi-dd": {
      required: false,
      validDate: true,
      range: [1, 31]
    }, 
    "passport-doi-mm": {
      required: false,
      validDate: true,
      range: [1, 12]
    }, 
    "passport-doi-yyyy": {
      required: false,
      validDate: true,
      range: [1990, 2012]
    }
  },
  messages: {
    "passport-doi-dd": "Please use format DD MM YYYY.",
    "passport-doi-mm": "Please use format DD MM YYYY.",
    "passport-doi-yyyy": "Please use format DD MM YYYY."
  }

推荐答案

您走对了-您需要传递Date构造函数编号而不是字符串(val将返回字符串).您还可以将params参数用于自定义规则，以使其更具扩展性(不特定于具有特定id s的三个字段):

You are on the right track-- You need to pass the Date constructor numbers instead of strings (val will return strings). You can also leverage the params argument to your custom rule to make it a bit more extensible (not specific to three fields with specific ids):

$.validator.addMethod("multidate", function (value, element, params) {
  var daySelector = params[0]
      , monthSelector = params[1]
      , yearSelector = params[2]
      , day = parseInt($(daySelector).val(), 10)
      , month = parseInt($(monthSelector).val(), 10)
      , year = parseInt($(yearSelector).val(), 10)
      , date = new Date(year, month, day);

  return (!$(daySelector).val() && !$(monthSelector).val() && !$(yearSelector).val()) || 
    !isNaN(date.getTime());

});


$(document).ready(function () {
  var dateFields = ["#passport-doi-1", "#passport-doi-2", "#passport-doi-3"];
  $("#dateform").validate({
    errorLabelContainer: "#errors",
    groups: {
      date: dateFields.join("")
    },
    rules: {
      "passport-doi-1": {
        multidate: dateFields
      },
      "passport-doi-2": {
        multidate: dateFields
      },
      "passport-doi-3": {
        multidate: dateFields
      }
    },
    messages: {
      "passport-doi-1": {
        multidate: "Please enter a valid date"
      },
      "passport-doi-2": {
        multidate: "Please enter a valid date"
      },
      "passport-doi-3": {
        multidate: "Please enter a valid date"
      }
    }
  });
});

我认为 group选项仅用于将错误消息分组(因此您仍然必须为每个输入定义验证规则).

I think the group option is only for grouping error messages (so you still have to define validation rules for each input).

示例: http://jsbin.com/oqawaz/9

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