Home Web Front-end HTML Tutorial CSS3滚动条-webkit-scrollbar - __sarah

CSS3滚动条-webkit-scrollbar - __sarah

May 22, 2016 pm 05:19 PM

webkit现在支持拥有overflow属性的区域,列表框,下拉菜单,textarea的滚动条自定义样式。

如果你想跳过介绍,直接看demo的话,请点击demo

滚动条是一个伪元素,可以自定义样式。这个伪类可以将webkit自身的滚动条渲染关闭,只按照用户自定义的css信息进行渲染。比如:

::-webkit-scrollbar {

width: 13px;

height: 13px;

}

width和height属性分别表示纵向滚动条的宽度和横向滚动条的高。也可以指定为%百分比,在在这种情况下就代表了,滚动条占整个视窗的百分比,如:

::-webkit-scrollbar {

width: 50%;

}

滚动条包括:滚动按钮和一个轨道。轨道本身有进一步氛围轨道碎片(track pieces)和一个滑块。轨道碎片值滑块上方和下面的区域。滚动条的角合适被设置为各种风格,比如可以调整文本区域的大小。

下面是关于滚动条的所有伪元素:

::-webkit-scrollbar{/*1*/}

::-webkit-scrollbar-button{/*2*/}

::-webkit-scrollbar-track{/*3*/}

::-webkit-scrollbar-track-piece{/*4*/}

::-webkit-scrollbar-thumb{/*5*/}

::-webkit-scrollbar-corner{/*6*/}

::-webkit-resizer{/*7*/}

任何对象都可以设置:边框、阴影、背景图片等等,创建的滚动条任然会按照操作系统本身的设置来完成其交互的行为。下面的伪类可以应用到上面的伪元素中。

:horizontal(horizontal伪类适用于任何水平方向上的滚动条)

:vertical(vertical伪类适用于任何垂直方向的滚动条)

:decrement(decrement伪类适用于按钮和轨道碎片。表示递减的按钮或轨道碎片,例如可以使区域向上或者向右移动的区域和按钮)

:increment(increment伪类适用于按钮和轨道碎片。表示递增的按钮或轨道碎片,例如可以使区域向下或者向左移动的区域和按钮)

:start(start伪类适用于按钮和轨道碎片。表示对象(按钮 轨道碎片)是否放在滑块的前面)

:end(end伪类适用于按钮和轨道碎片。表示对象(按钮 轨道碎片)是否放在滑块的后面)

:double-button(double-button伪类适用于按钮和轨道碎片。判断轨道结束的位置是否是一对按钮。也就是轨道碎片紧挨着一对在一起的按钮。)

:single-button(single-button伪类适用于按钮和轨道碎片。判断轨道结束的位置是否是一个按钮。也就是轨道碎片紧挨着一个单独的按钮。)

:no-button(no-button伪类表示轨道结束的位置没有按钮。)

:corner-present(corner-present伪类表示滚动条的角落是否存在。)

:window-inactive(适用于所有滚动条,表示包含滚动条的区域,焦点不在该窗口的时候。)

::-webkit-scrollbar-track-piece:start {
   /*滚动条上半边或左半边*/
}

::-webkit-scrollbar-thumb:window-inactive {
   /*当焦点不在当前区域滑块的状态*/

}

::-webkit-scrollbar-button:horizontal:decrement:hover {
   /*当鼠标在水平滚动条下面的按钮上的状态*/

}

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