应用场景
在项目中会存在大量这样的需求：
1.选择不同的radio单选框,页面上的部分内容随之显示隐藏
2.选择不同的option下拉框内容，页面上的部分内容随之显示隐藏
如果每次遇到这类需求都单独写方法，不光费时间，还会让我们的代码显得异常冗余，因此我们写个通用方法！
附上代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<style>
.commonCss{
height: 100px;
line-height: 100px;
text-align: center;
border: 1px solid red;
}
</style>
</head>
<body>
<div class="commonCss div1 initHide">div1</div>
<div class="commonCss div2 initHide">div2</div>
<div class="commonCss div3 initHide">div3</div>
<div>
<form action="">
<div>
<label>radio1</label>
<input type="radio" name="radio" data-show-class=".div1" data-hide-class=".initHide">
<label>radio2</label>
<input type="radio" name="radio" data-show-class=".div2" data-hide-class=".initHide">
<label>radio3</label>
<input type="radio" name="radio" data-show-class=".div3" data-hide-class=".initHide">
</div>
<div>
<select>
<option value="">请选择</option>
<option value="1" data-show-class=".div1" data-hide-class=".initHide">option1</option>
<option value="2" data-show-class=".div2" data-hide-class=".initHide">option2</option>
<option value="3" data-show-class=".div3" data-hide-class=".initHide">option3</option>
</select>
</div>
</form>
</div>
<script>
var myFunction = {
initRadio : function(){
$('input:radio').on('change',function(){
var $showClass = $(this).data('showClass');
var $hideClass = $(this).data('hideClass');
$($hideClass).hide();
$($showClass).show();
})
},
initSelect : function(){
$('select').on('change',function(){
var $target = $(this).find('option:selected');
var $showClass = $target.data('showClass');
var $hideClass = $target.data('hideClass');
$($hideClass).hide();
$($showClass).show();
})
}
};
myFunction.initRadio();
myFunction.initSelect();
</script>
</body>
</html>