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 < 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; } [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]

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本文标题：Javascript 生成无限下拉列表实现代码

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