css - 如何让按钮在按下时改变其背景颜色？

Question

我正在使用 AngularJS，我想知道是否有任何功能可以帮助我。我有以下按钮 CSS:

   button {
        background-color: @button-background-color;
        border: 1px solid @button-border;
        background-color: #ccc;
        border: 1px solid #999;
        color: @button-color;
        background: #e6e6e6;
        background-image: -moz-linear-gradient(top,#fff,#d9d9d9);
        background-image: -webkit-linear-gradient(top,#fff,#d9d9d9);
        background-image: -o-linear-gradient(top,#fff,#d9d9d9);
        background-image: -ms-linear-gradient(top,#fff,#d9d9d9);
        background-image: linear-gradient(top,#fff,#d9d9d9);
        border: 1px solid #ccc;
        border-top-color: #ccc;
        border-bottom-color: #a2a2a2;
        border-radius: 4px;
        text-shadow: 0 1px 0 rgba(255,255,255,1);
        box-shadow: 0 1px 1px rgba(0,0,0,.1),inset 0 1px 0 rgba(255,255,255,.2);
        -moz-appearance: none;
        -webkit-appearance: none;
        appearance: none;
        display: inline-block;
        line-height: 18px;
        line-height: 1.8rem;
        font-size: 14px;
        font-size: 1.4rem;
        cursor: pointer;
        color: #474747;
        padding: 4px 10px 3px 10px;
        font-family: arial,sans-serif;
        vertical-align: middle;
  }

这看起来不错，但我希望在我将鼠标悬停在按钮上并单击但尚未释放单击时出现效果。

有什么方法可以让我用 angular 捕捉到这个，并在我按住按钮的那段时间改变类？

请注意，我正在寻找纯 CSS 或 CSS/AngularJS 解决方案。我没有使用 jQuery。

谢谢

Answer 1

http://www.w3schools.com/cssref/sel_hover.asp

http://www.w3schools.com/cssref/sel_active.asp

button:hover button:active

  button {
        background-color: @button-background-color;
        border: 1px solid @button-border;
        background-color: #ccc;
        border: 1px solid #999;
        color: @button-color;
        background: #e6e6e6;
        background-image: -moz-linear-gradient(top,#fff,#d9d9d9);
        background-image: -webkit-linear-gradient(top,#fff,#d9d9d9);
        background-image: -o-linear-gradient(top,#fff,#d9d9d9);
        background-image: -ms-linear-gradient(top,#fff,#d9d9d9);
    background-image: linear-gradient(top,#fff,#d9d9d9);
        border: 1px solid #ccc;
        border-top-color: #ccc;
        border-bottom-color: #a2a2a2;
        border-radius: 4px;
        text-shadow: 0 1px 0 rgba(255,255,255,1);
        box-shadow: 0 1px 1px rgba(0,0,0,.1),inset 0 1px 0 rgba(255,255,255,.2);
        -moz-appearance: none;
        -webkit-appearance: none;
        appearance: none;
    display: inline-block;
        line-height: 18px;
        line-height: 1.8rem;
        font-size: 14px;
        font-size: 1.4rem;
        cursor: pointer;
        color: #474747;
        padding: 4px 10px 3px 10px;
    font-family: arial,sans-serif;
        vertical-align: middle;
  }
button:hover 
{
  background: red;
}

button:active 
{
  background: green;
}

<button>button</button>