<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.div1
{
border:5px solid #000000;
width: 100px;
height: 100px;
background: rgb(235, 9, 178);
}
</style>
</head>
<body>
<select name="" id="color">
<option value="" selected="selected">---背景顏色---</option>
<option value="violet">violet紫色</option>
<option value="cyan">cyan青色</option>
<option value="orange">orange橙色</option>
<option value="gray">gray灰色</option>
</select>
<div class="div1"></div>
<input type="radio" name="BorderColor" value="red" />邊框紅
<input type="radio" name="BorderColor" value="green" />邊框綠
<input type="radio" name="BorderColor" value="blue" />邊框藍
</body>
</html>
<script src="../jquery.js"></script>
<script type="text/javascript">
$("#color").change(function(){
$('#color option:selected');
$('div').css('background',$(this).val());
});
$("input[name='BorderColor']").change(function(){
$("div").css("border-color",$(this).val())
});
</script>
效果圖：