动态删除ASP MVC中元素的必填属性? [英] dynamically remove an element's required attribute in ASP MVC?

问题描述

在使用无干扰验证的ASP MVC项目中，有没有办法从元素中动态删除Required属性?

Is there a way, in an ASP MVC project using unobtrusive validation, to dynamically remove the Required attribute from an element?

该元素在视图模型中装饰为Required注释.我以为我可以通过使用JQuery删除html属性"data-val-required"来删除此元素，但客户端验证仍会按需处理该元素.通过操纵不显眼的验证属性来操纵元素的验证是否不可能?

The element is decorated with a Required annotation in the view model. I thought I could remove this by removing the html attribute, "data-val-required," with JQuery but client validation still treats the element as required. Is it impossible to manipulate the element's validation by manipulating the unobtrusive validation attributes?

这是我尝试过的方法，但是没有用.如果要取消选中复选框，我想删除必填属性.

This is what I tried, but it didn't work. I wanted to remove the required attribute if a check box was unchecked.

$("#chkTempHire").click(function () {

    var checked = $(this).attr("checked");
    var attr = $("#txtTempHireEndDate").attr("data-val-required");
    var hasAttr = false;

    if (typeof attr !== typeof undefined && attr !== false)
        hasAttr = true;

    if (!checked && hasAttr)
        $("#txtTempHireEndDate").removeAttr("data-val-required");
});

我错过了什么吗?还是不可能?

Am I missing something, or is it just not possible?

谢谢！

推荐答案

您可以使用jQuery内置的.rules()方法，无需手动删除属性.

You can use the .rules() method built into jQuery, you don't need to manually remove attributes.

要删除:

$("#txtTempHireEndDate").rules("remove", "required")

要添加:

$("#txtTempHireEndDate").rules("add", "required")

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