浅谈magic-check——美化单选款、复选框

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单选框Radio和多选框checkbox需要美化吗？当然，原生的样式百年不变已经满足不了我们客户的需求。表单很多控件需要美化，我们有借助Javascript来做美化的，也有直接用CSS来美化的，今天我给大家介绍使用纯CSS实现radio和checkbox的美化。
这里写图片描述

HTML

<div id="main">    <div class="demo">        <div class="col">          <h4>Checkbox</h4>            <div class="opt">                <input class="magic-checkbox" type="checkbox" name="layout" id="c1">                <label for="c1">Normal</label>            </div>            <div class="opt">                <input class="magic-checkbox" type="checkbox" name="layout" id="c2" checked>                <label for="c2">Checked</label>            </div>            <div class="opt">                <input class="magic-checkbox" type="checkbox" name="layout" id="c3" value="option2" disabled>                <label for="c3" style="color:#ccc">Disabled</label>            </div>            <div class="opt">                <input class="magic-checkbox" type="checkbox" name="layout" id="c4" checked disabled>                <label for="c4" style="color:#ccc">Checked && Disabled</label>            </div>        </div>        <div class="col">            <h4>Radio</h4>            <div class="opt">                <input class="magic-radio" type="radio" name="radio" id="r1" value="option1">                <label for="r1">Normal</label>            </div>            <div class="opt">                <input class="magic-radio" type="radio" name="radio" id="r2" value="option2" checked>                <label for="r2">Checked</label>            </div>            <div class="opt">                <input class="magic-radio" type="radio" name="radio" id="r3" value="option3" disabled>                <label for="r3" style="color:#ccc">禁用</label>            </div>            <div class="opt">                <input class="magic-radio" type="radio" id="r4" value="option4" checked disabled>                <label for="r4" style="color:#ccc">Checked && Disabled</label>            </div>        </div>    </div></div>

CSS

@keyframes hover-color {  from {    border-color: #c0c0c0; }  to {    border-color: #3e97eb; } }.magic-radio,.magic-checkbox {  position: absolute;  display: none; }.magic-radio[disabled],.magic-checkbox[disabled] {  cursor: not-allowed; }.magic-radio + label,.magic-checkbox + label {  position: relative;  display: block;  padding-left: 30px;  cursor: pointer;  vertical-align: middle; }  .magic-radio + label:hover:before,  .magic-checkbox + label:hover:before {    animation-duration: 0.4s;    animation-fill-mode: both;    animation-name: hover-color; }  .magic-radio + label:before,  .magic-checkbox + label:before {    position: absolute;    top: 0;    left: 0;    display: inline-block;    width: 20px;    height: 20px;    content: '';    border: 1px solid #c0c0c0; }  .magic-radio + label:after,  .magic-checkbox + label:after {    position: absolute;    display: none;    content: ''; }.magic-radio[disabled] + label,.magic-checkbox[disabled] + label {  cursor: not-allowed;  color: #e4e4e4; }  .magic-radio[disabled] + label:hover, .magic-radio[disabled] + label:before, .magic-radio[disabled] + label:after,  .magic-checkbox[disabled] + label:hover,  .magic-checkbox[disabled] + label:before,  .magic-checkbox[disabled] + label:after {    cursor: not-allowed; }  .magic-radio[disabled] + label:hover:before,  .magic-checkbox[disabled] + label:hover:before {    border: 1px solid #e4e4e4;    animation-name: none; }  .magic-radio[disabled] + label:before,  .magic-checkbox[disabled] + label:before {    border-color: #e4e4e4; }.magic-radio:checked + label:before,.magic-checkbox:checked + label:before {  animation-name: none; }.magic-radio:checked + label:after,.magic-checkbox:checked + label:after {  display: block; }.magic-radio + label:before {  border-radius: 50%; }.magic-radio + label:after {  top: 7px;  left: 7px;  width: 8px;  height: 8px;  border-radius: 50%;  background: #3e97eb; }.magic-radio:checked + label:before {  border: 1px solid #3e97eb; }.magic-radio:checked[disabled] + label:before {  border: 1px solid #c9e2f9; }.magic-radio:checked[disabled] + label:after {  background: #c9e2f9; }.magic-checkbox + label:before {  border-radius: 3px; }.magic-checkbox + label:after {  top: 2px;  left: 7px;  box-sizing: border-box;  width: 6px;  height: 12px;  transform: rotate(45deg);  border-width: 2px;  border-style: solid;  border-color: #fff;  border-top: 0;  border-left: 0; }.magic-checkbox:checked + label:before {  border: #3e97eb;  background: #3e97eb; }.magic-checkbox:checked[disabled] + label:before {  border: #c9e2f9;  background: #c9e2f9; }body{line-height: 2em;    padding: 30px;}

我们知道，很多使用JS来美化表单控件的方法都不是很理想，需要借助引入js和css，有的甚至使用图片和字体图标，而且还要依赖jQuery，而且复杂、可维护性差。

使用magic-check
magic-check只用了几十行CSS代码就可以实现checkbox和radio表单的美化。首先载入css文件。

<link rel="stylesheet" type="text/css" href="magic-check.css">

然后，只要给input元素加上一个CSS类magic-checkbox或magic-radio就可以。

Radio

<input class="magic-radio" type="radio" name="radio" id="r1"><label for="r1">Normal</label>

Checkbox

<input class="magic-checkbox" type="checkbox" name="layout" id="c1"><label for="c1">Normal</label>

细心的朋友可以看下css代码，已经打包可以下载。CSS将checkbox和radio隐藏，然后使用:before和:after定位重绘checkbox和radio外观，从而达到美化效果，支持IE9+。

参考链接：
http://www.w3cfuns.com/notes.php?mod=view&u=15399&id=ec9943568a2304020017cfe362fe39c8

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