css3和jquery实现自定义checkbox和radiobox组件

主要思路是利用隐藏原来的checkbox和radiobox，用一个div来模拟checkbox/radiobox，并使用jQuery来完成选择切换时的动画效果。

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代码如下:

<ul>
<li>
<p>Gender:</p>
</li>
<li>
<input type="radio" name="radio-btn" />Male</li>
<li>
<input type="radio" name="radio-btn" />Female</li>
</ul>
<ul>
<li>
<p>Favorite music:</p>
</li>
<li>
<input type="checkbox" name="check-box" /> <span>Pop music</span></p> <p> </li>
<li>
<input type="checkbox" name="check-box" /> <span>Rock music</span></p> <p> </li>
<li>
<input type="checkbox" name="check-box" /> <span>Rap music</span></p> <p> </li>
<li>
<input type="checkbox" name="check-box" /> <span>Hiphop music</span></p> <p> </li>
</ul>

然后我们用jQuery代码来为每一个checkbox和radiobox创建一个div，这个div的classname为check-box和radio-btn。

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代码如下:

$('input[name="radio-btn"]').wrap('<div class="radio-btn"><i></i></div>');
$('input[name="check-box"]').wrap('<div class="check-box"><i></i></div>');

那么我们接下来要让原来的checkbox隐藏，同时设置模拟div的样式：

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代码如下:

.radio-btn input[type="radio"], .check-box input[type="checkbox"] {
visibility: hidden;
}

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代码如下:

.check-box {
width: 22px;
height: 22px;
cursor: pointer;
display: inline-block;
margin: 2px 7px 0 0;
position: relative;
overflow: hidden;
box-shadow: 0 0 1px #ccc;
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
border-radius: 3px;
background: rgb(255, 255, 255);
background: -moz-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(255, 255, 255, 1)), color-stop(47%, rgba(246, 246, 246, 1)), color-stop(100%, rgba(237, 237, 237, 1)));
background: -webkit-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: -o-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: -ms-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: linear-gradient(to bottom, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#ededed', GradientType=0);
border: 1px solid #ccc;
}
.check-box i {
background: url('css/check_mark.png') no-repeat center center;
position: absolute;
left: 3px;
bottom: -15px;
width: 16px;
height: 16px;
opacity: .5;
-webkit-transition: all 400ms ease-in-out;
-moz-transition: all 400ms ease-in-out;
-o-transition: all 400ms ease-in-out;
transition: all 400ms ease-in-out;
-webkit-transform:rotateZ(-180deg);
-moz-transform:rotateZ(-180deg);
-o-transform:rotateZ(-180deg);
transform:rotateZ(-180deg);
}
.checkedBox {
-moz-box-shadow: inset 0 0 5px 1px #ccc;
-webkit-box-shadow: inset 0 0 5px 1px #ccc;
box-shadow: inset 0 0 5px 1px #ccc;
border-bottom-color: #fff;
}
.checkedBox i {
bottom: 2px;
-webkit-transform:rotateZ(0deg);
-moz-transform:rotateZ(0deg);
-o-transform:rotateZ(0deg);
transform:rotateZ(0deg);
}
/*Custom radio button*/
.radio-btn {
width: 20px;
height: 20px;
display: inline-block;
float: left;
margin: 3px 7px 0 0;
cursor: pointer;
position: relative;
-webkit-border-radius: 100%;
-moz-border-radius: 100%;
border-radius: 100%;
border: 1px solid #ccc;
box-shadow: 0 0 1px #ccc;
background: rgb(255, 255, 255);
background: -moz-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(255, 255, 255, 1)), color-stop(47%, rgba(246, 246, 246, 1)), color-stop(100%, rgba(237, 237, 237, 1)));
background: -webkit-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: -o-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: -ms-linear-gradient(top, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
background: linear-gradient(to bottom, rgba(255, 255, 255, 1) 0%, rgba(246, 246, 246, 1) 47%, rgba(237, 237, 237, 1) 100%);
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffffff', endColorstr='#ededed', GradientType=0);
}
.checkedRadio {
-moz-box-shadow: inset 0 0 5px 1px #ccc;
-webkit-box-shadow: inset 0 0 5px 1px #ccc;
box-shadow: inset 0 0 5px 1px #ccc;
}
.radio-btn i {
border: 1px solid #E1E2E4;
width: 10px;
height: 10px;
position: absolute;
left: 4px;
top: 4px;
-webkit-border-radius: 100%;
-moz-border-radius: 100%;
border-radius: 100%;
}
.checkedRadio i {
background-color: #898A8C;
}

上面这段CSS3代码就是用样式来自定义div，让div的样式和checkbox和radiobox一样。

最后我们来模拟点击选中和取消选中，这部分也是用jQuery来实现：

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代码如下:

$(".radio-btn").on('click', function () {
var _this = $(this),
block = _this.parent().parent();
block.find('input:radio').attr('checked', false);
block.find(".radio-btn").removeClass('checkedRadio');
_this.addClass('checkedRadio');
_this.find('input:radio').attr('checked', true);
});

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代码如下:

$.fn.toggleCheckbox = function () {
this.attr('checked', !this.attr('checked'));
}
$('.check-box').on('click', function () {
$(this).find(':checkbox').toggleCheckbox();
$(this).toggleClass('checkedBox');
});

这段代码可以让选中和取消选中时产生一点小小的动画。