Javascript 生成无限下拉列表实现代码_javascript技巧

复制代码 代码如下:

//公司二维数组数据源
Office = [
["Dept", "ParentDept"],
["业务部", "0"],
["技术部", "0"],
["市场部", "0"],
["www.yongfa365.com", "业务部"],
["业务部小杨", "业务部"],
["业务部小菜", "业务部"],
["技术部老柳", "技术部"],
["技术部老杨", "技术部"],
["技术部老菜", "技术部"],
["市场部柳先生", "市场部"],
["市场部杨先生", "市场部"],
["市场部菜鸟", "市场部"]
]

//省市三维数组数据源
City3 = [
["Dept", "ParentId", "Id"],
["北京", "0", "010"],
["山西", "0", "0359"],
["朝阳区", "010", "001"],
["海淀区", "010", "002"],
["豆各庄", "001", "101"],
["十里堡", "001", "102"],
["中关村", "002", "201"],
["上地", "002", "202"],
["运城地区", "0359", "301"],
["太原市", "0359", "302"],
["永济市", "301", "311"],
["小区", "302", "312"]
];

//FillSelectTree("nowhaha", City3, "0", "311", -1)
//Select控件ID,数据源,父级值,选中值,第几级（用来产生分隔符）
function FillSelectTree(SelectId, ArrObj, ParentValue, SelectedValue, NowI) {
StrObj = eval(document.getElementById(SelectId));

NowI++;

//判断它是二级数据源，还是三级
if (ArrObj[0].length == 2)
{ ArrNum = 0; }
else
{ ArrNum = 2; }

//生成所有Option
for (var i = 0; i if (ArrObj[i][1] == ParentValue) {
StrObj.options[StrObj.length] = new Option(String("　　", NowI) + ArrObj[i][0], ArrObj[i][ArrNum]);

//选中默认值
if (ArrObj[i][ArrNum] == SelectedValue) {
StrObj.options[StrObj.length - 1].selected = true;
}

//遍历
FillSelectTree(SelectId, ArrObj, ArrObj[i][ArrNum], SelectedValue, NowI);
}
}
}


//复制字符串多少次
function String(str, nowi) {
strtemp = "";
for (var i = 0; i strtemp += str;
}
return strtemp;
}

<title></title> <script language="JavaScript" type="text/javascript"> //公司二维数组数据源 Office = [ ["Dept", "ParentDept"], ["业务部", "0"], ["技术部", "0"], ["市场部", "0"], ["业务部小柳", "业务部"], ["业务部小杨", "业务部"], ["业务部小菜", "业务部"], ["技术部老柳", "技术部"], ["技术部老杨", "技术部"], ["技术部老菜", "技术部"], ["市场部柳先生", "市场部"], ["市场部杨先生", "市场部"], ["市场部菜鸟", "市场部"] ] //省市三维数组数据源 City3 = [ ["Dept", "ParentId", "Id"], ["北京", "0", "010"], ["山西", "0", "0359"], ["朝阳区", "010", "001"], ["海淀区", "010", "002"], ["豆各庄", "001", "101"], ["十里堡", "001", "102"], ["中关村", "002", "201"], ["上地", "002", "202"], ["运城地区", "0359", "301"], ["太原市", "0359", "302"], ["永济市", "301", "311"], ["小区", "302", "312"] ]; //FillSelectTree("nowhaha", City3, "0", "311", -1) //Select控件ID,数据源,父级值,选中值,第几级（用来产生分隔符） function FillSelectTree(SelectId, ArrObj, ParentValue, SelectedValue, NowI) { StrObj = eval(document.getElementById(SelectId)); NowI++; //判断它是二级数据源，还是三级 if (ArrObj[0].length == 2) { ArrNum = 0; } else { ArrNum = 2; } //生成所有Option for (var i = 0; i < ArrObj.length; i++) { if (ArrObj[i][1] == ParentValue) { StrObj.options[StrObj.length] = new Option(String("　　", NowI) + ArrObj[i][0], ArrObj[i][ArrNum]); //选中默认值 if (ArrObj[i][ArrNum] == SelectedValue) { StrObj.options[StrObj.length - 1].selected = true; } //遍历 FillSelectTree(SelectId, ArrObj, ArrObj[i][ArrNum], SelectedValue, NowI); } } } //复制字符串多少次 function String(str, nowi) { strtemp = ""; for (var i = 0; i < nowi; i++) { strtemp += str; } return strtemp; } </script> <hr> <select id="nowhaha"> </select> <script language="JavaScript" type="text/javascript"> FillSelectTree("nowhaha", City3, "0", "311", -1) </script> <select id="NowOffice"> </select> <script language="JavaScript" type="text/javascript"> FillSelectTree("NowOffice", Office, "0", "业务部小柳", -1) </script>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]