日期:2014-05-16 浏览次数:20457 次
JS实现下拉框的动态添加,网页代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>动态添加下拉框</title>
<script type="text/javascript" src="../JS文件/jquery.js"></script>
<script type="text/javascript" src="../JS文件/SelectMenu2.js" charset=“utf-8”></script>
</head>
<body>
<form action="#">
<br />
<br />
<br />
<div class="CarInfo">
<span class="CarType">车类型:
<select >
<option value="请选择" selected="selected">请选择</option>
<option value="宝马">宝马</option>
<option value="奔驰">奔驰</option>
</select>
</span>
<span class="CarColor" style="display:none">车颜色:
<select>
</select>
</span>
<span class="CarWheel" style="display:none">车轮:
<select>
</select>
</span>
</div>
</form>
</body>
</html>
// JavaScript Document $(document).ready(function (){ var CarTypeSelect = $(".CarType").children("select"); var CarColorSelect = $(".CarColor").children("select"); var CarWheelSelect = $(".CarWheel").children("select"); //给第一个下拉框的SelectChanged时间编码 CarTypeSelect.change(function (){ //取得当前下拉框的值 var CarTypeValue = $(this).val(); //当第一个下拉框内容改变的时候,第三个下拉框要隐藏起来 CarWheelSelect.parent().hide(); if(CarTypeValue !="") { CarColorSelect.html(""); $("<option value = ''>请选择</option>").appendTo(CarColorSelect); switch(CarTypeValue){ case "宝马": var CarColor=["绿色","黑色"]; for(var i = 0;i<CarColor.length;i++){ $("<option value='"+CarColor[i]+"'>" + CarColor[i] + "</option>").appendTo(CarColorSelect); } break; case "奔驰": var CarColor = ["白色","红色"]; for(var i = 0;i<CarColor.length;i++){ $("<option value='"+CarColor[i]+"'>" + CarColor[i] + "</option>").appendTo(CarColorSelect); } break; } CarColorSelect.parent().show(); } else { CarColorSelect.parent().hide(); } }); CarColorSelect.change(function (){ var CarColorValue = $(this).val(); CarWheelSelect.html(""); if(CarColorValue != "") { CarWheelSelect.html(""); $("<option value = ''>请选择</option>").appendTo(CarWheelSelect); switch(CarColorValue){ case "绿色": var CarWheel = ["绿钢","绿碳纤维"]; for(var i = 0;i<CarWheel.length;i++){ $("<option value='"+CarWheel[i]+"'>" + CarWheel[i] + "</option>").appendTo(CarWheelSelect); } break; case "红色": var CarWheel = ["红钢","红碳纤维"]; for(var i = 0;i<CarWheel.length;i++){ $("<option value='"+CarWheel[i]+"'>" + CarWheel[i] + "</option>").appendTo(CarWheelSelect); } break; case "黑色":