动态jQuery使用AddMethod基于元素验证错误消息 [英] Dynamic jQuery Validate error messages with AddMethod based on the element

问题描述

假设我有一个自定义AddMethod到jQuery Validate，如：

Let's say I have a custom AddMethod to jQuery Validate like:

$.validator.addMethod('min-length', function (val, element) {
    // do stuff

// the error message here needs to be dynamic
}, 'The field cannot be less than than '
     + element.attr('data-min') + // it is within the closure, but it can't grab it
   ' length.');

我无法找到一种方法来获取元素变量问题，并从中获取任何价值。我在这里缺少什么？

I can't figure out a way to get the element variable in question, and get any values from it. What am I missing here?

推荐答案

从查看验证器源代码，我认为应该这样做：

From looking at the validator source code, I think this should do it:

$.validator.addMethod('min-length', function (val, element) {
    return this.optional(element) || val.length >= $(element).data('min');
}, function(params, element) {
  return 'The field cannot be less than than ' + $(element).data('min') + ' length.'
});

在原始代码中，消息字符串不在闭包内;闭包是 addMethod 的第二个参数，错误信息是第三个参数。

In your original code, the message string is NOT within the closure; the closure is the 2nd argument to addMethod, the error message is the 3rd argument.

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