完美解决动态二级下拉菜单联动问题(1)

王朝other·作者佚名  2007-06-26
窄屏简体版  字體: |||超大  

现在是一个静态的演示来说明实现的原理:

<script language="javascript" type="text/javascript">

var totalCount=12; //定义数据总数,包括1级2级

//数据结构,是个数组的数组,可以使用开发语言动态产生

dataArray = new Array();

dataArray[0] = new Array("1100","1100","0"); //一级菜单表示为0

dataArray[1] = new Array("1200","1200","0");

dataArray[2] = new Array("1300","1300","0");

dataArray[3] = new Array("1111","0001","1100");

dataArray[4] = new Array("2222","0002","1100");

dataArray[5] = new Array("3333","0003","1100");

dataArray[6] = new Array("4444","4444","1200");

dataArray[7] = new Array("5555","5555","1200");

dataArray[8] = new Array("6666","6666","1200");

dataArray[9] = new Array("7777","7777","1200");

dataArray[10] = new Array("8888","8888","1300");

dataArray[11] = new Array("9999","9999","1300");

//一级菜单改变产生的动作

function select1Change(select1ID)

{

if(select1ID=='select1Text') //如果是选中了一级菜单文字,则显示回二级菜单文字

{

alert("回到2级菜单显示");

document.myform.select2.length = 0;

document.myform.select2.options[0] = new Option("==请选二级分类==","select2Text" );

return false;

}

else //其他情况则显示对应的2级菜单项

{

document.myform.select2.length = 0;

for (var i=0;i < totalCount; i++)

{

if (dataArray[i][2] == select1ID)

{

document.myform.select2.options[document.myform.select2.length]

= new Option(dataArray[i][0], dataArray[i][1]);

}

}

}

}

//二级菜单项目选中产生的动作,这里只是示意性的,没有实际意义

function select2Change(select2ID)

{

alert(select2ID);

}

</script>

<form method="POST" name="myform">

<p>

<select name="select1" onchange="select1Change(document.myform.select1.options[document.myform.select1.selectedIndex].value)">

<option selected value="select1Text">==请选一级分类==</option>

<option value="1100" id="1100">1100</option>

<option value="1200" id="1200">1200</option>

<option value="1300" id="1300">1300</option>

</select>&nbsp;

<select name="select2" onchange="select2Change(document.myform.select2.options[document.myform.select2.selectedIndex].value)">

<option selected value="select2Text">==请选二级分类==</option>

</select> </p>

</form>

 
 
 
免责声明:本文为网络用户发布,其观点仅代表作者个人观点,与本站无关,本站仅提供信息存储服务。文中陈述内容未经本站证实,其真实性、完整性、及时性本站不作任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
 
 
© 2005- 王朝網路 版權所有 導航