Select2下拉选择框的样式 [英] Styling of Select2 dropdown select boxes

问题描述

我在项目中使用Select2来对搜索表单中的一些选择框进行样式化。我设法改变箭头容器的渐变背景为黑色渐变：

I'm using Select2 in a project to style some select boxes in a search form. I managed to change the gradient background of the arrow container to a black gradient:

.select2-container .select2-choice .select2-arrow {
    background-image: -khtml-gradient(linear, left top, left bottom, from(#424242), to(#030303));
    background-image: -moz-linear-gradient(top, #424242, #030303);
    background-image: -ms-linear-gradient(top, #424242, #030303);
    background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #424242), color-stop(100%, #030303));
    background-image: -webkit-linear-gradient(top, #424242, #030303);
    background-image: -o-linear-gradient(top, #424242, #030303);
    background-image: linear-gradient(#424242, #030303);
}

我希望箭头是白色的，但不幸的是Select2正在使用背景图像为不同的图标而不是字体awesome或类似的东西，所以没有办法只是改变CSS的颜色。

I would like the arrow to be white, but unfortunately Select2 is using a background image for the different icons instead of font-awesome or something similar, so there's no way to just change the color with CSS.

最简单的方法，箭头白色代替默认灰色？我真的必须用我自己的替换背景png（select2.png和select2x2.png）吗？或者有更简单的方法吗？

What would be the easiest way to make the arrow white instead of the default grey? Do I really have to replace the background png (select2.png and select2x2.png) with my own? Or is there an easier method?

另一个问题是如何更改选择框的高度。我知道如何改变下拉框在打开状态的高度，但我想改变在关闭状态下的选择框的高度。任何想法？

Another question I have is how to change the height of the select boxes. I know how to change the height of the dropdown box in opened state, but I want to change the height of the selectbox in closed state. Any ideas?

推荐答案

感谢评论中的建议。我做了一点脏的黑客来得到我想要的，而不必创建我自己的形象。使用javascript我首先隐藏用于向下箭头的默认标签，如下：

Thanks for the suggestions in the comments. I made a bit of a dirty hack to get what I want without having to create my own image. With javascript I first hide the default tag that's being used for the down arrow, like so:

$('b[role="presentation"]').hide();

然后我在我的页面中包含font-awesome，并添加了我自己的向下箭头， javascript，替换默认值：

I then included font-awesome in my page and add my own down arrow, again with a line of javascript, to replace the default one:

$('.select2-arrow').append('<i class="fa fa-angle-down"></i>');

然后使用CSS我样式的选择框。我设置高度，将箭头区域的背景颜色更改为渐变黑色，将宽度，字体大小以及向下箭头的颜色更改为白色：

Then with CSS I style the select boxes. I set the height, change the background color of the arrow area to a gradient black, change the width, font-size and also the color of the down arrow to white:

.select2-container .select2-choice {
    padding: 5px 10px;
    height: 40px;
    width: 132px; 
    font-size: 1.2em;  
}

.select2-container .select2-choice .select2-arrow {
    background-image: -khtml-gradient(linear, left top, left bottom, from(#424242), to(#030303));
    background-image: -moz-linear-gradient(top, #424242, #030303);
    background-image: -ms-linear-gradient(top, #424242, #030303);
    background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #424242), color-stop(100%, #030303));
    background-image: -webkit-linear-gradient(top, #424242, #030303);
    background-image: -o-linear-gradient(top, #424242, #030303);
    background-image: linear-gradient(#424242, #030303);
    width: 40px;
    color: #fff;
    font-size: 1.3em;
    padding: 4px 12px;
}

结果是我想要的样式：

Update 5/6/2015
在另一个答案中提到的@Katie Lacy在Select2的版本4中更改了类名。具有新类名的更新的CSS应如下所示：

Update 5/6/2015 As @Katie Lacy mentioned in the other answer the classnames have been changed in version 4 of Select2. The updated CSS with the new classnames should look like this:

.select2-container--default .select2-selection--single{
    padding:6px;
    height: 37px;
    width: 148px; 
    font-size: 1.2em;  
    position: relative;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    background-image: -khtml-gradient(linear, left top, left bottom, from(#424242), to(#030303));
    background-image: -moz-linear-gradient(top, #424242, #030303);
    background-image: -ms-linear-gradient(top, #424242, #030303);
    background-image: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #424242), color-stop(100%, #030303));
    background-image: -webkit-linear-gradient(top, #424242, #030303);
    background-image: -o-linear-gradient(top, #424242, #030303);
    background-image: linear-gradient(#424242, #030303);
    width: 40px;
    color: #fff;
    font-size: 1.3em;
    padding: 4px 12px;
    height: 27px;
    position: absolute;
    top: 0px;
    right: 0px;
    width: 20px;
}

JS：

$('b[role="presentation"]').hide();
$('.select2-selection__arrow').append('<i class="fa fa-angle-down"></i>');

这篇关于Select2下拉选择框的样式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！