无效的CSS规则应用于页面加载

无效的CSS规则应用于页面加载

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问题描述

请在Firefox或Chrome中查看这两个小提琴。
在中,我只有一个简单的表单,其中包含必需属性和提交按钮。当框为空时按下submit会导致它被设置为 invalid (在Firefox中,它是一个红色轮廓)。但它会一直等到你按下提交以显示它是无效的。



现在尝试。这是相同的,除了有一些CSS:

 输入:invalid {
border-color:orange
}

$ b

除此之外,在提交之前,即使也应用橙色边框颜色按下。因此,当且仅当您为表单手动设置无效样式时,浏览器才会应用它,这不是直观的行为。



有没有办法解决这个问题?

解决方案

以下是您要找的内容:



风格如下:

  form.submitted input:invalid {
border-color:orange
}

然后添加这个js:

$ $ $('input [type =submit]')。 click(function(){
$('form')。addClass('submitted');
});

我不相信有一种方法可以在没有javascript的情况下实现这一点。


Check out these two fiddles in Firefox or Chrome.In this one, I've got just a simple form with a required attribute and a submit button. Pressing "submit" when the box is empty causes it to be styled as invalid (in Firefox, it's a red outline). But it waits until you press submit to show that it's invalid.

Now try this one. It's identical, except that there's some css:

input:invalid{
    border-color:orange
}

Except this time the orange border color is applied even before submit is pressed. So if and only if you manually set an invalid style for a form, the browser applies it before, which is not intuitive behavior. Of course a required field will invalid before you enter anything.

Is there a way to fix this?

解决方案

Here's what you're looking for: http://jsfiddle.net/CaseyRule/16fuhf6r/2/

Style it like this:

form.submitted input:invalid{
    border-color:orange
}

And then add this js:

$('input[type="submit"]').click( function(){
    $('form').addClass('submitted');
});

I don't believe there is a way to achieve this yet without javascript.

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08-21 01:46