本篇文章给大家带来的内容是关于json数据实现二级联动的实例代码，有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
zaiqing_shenhe.jsp
<head>
<link href="static/bootstrap-3.3.5-dist/css/bootstrap.css" rel="stylesheet" />
<link href="static/bootstrap-table/bootstrap-table.css" rel="stylesheet" />
<link rel="stylesheet" href="static/bootstrap-select/bootstrap-select.min.css" />
</head>
<body>
<div class="panel-body" style="padding-bottom:0px;">
<div class="panel panel-default" style="margin:10px;">
<div class="panel-heading">
<span>查询条件</span>
</div>
<input id="query_dataSource" type="hidden" value="${dataSource}">
<input name="id" type="hidden" value="${id}">
<div class="panel-body">
<!-- form表单 -->
<form class="form-horizontal" id="formSearch">
<div class="form-group" style="margin:0px">
<!-- 一级选择框 -->
<div class="col-sm-2" style="width:110px;">
<label class="control-label" for="txt_search_departmentname">数据来源</label>
<select class="form-control" id="dataSource">
<option code="" value="" selected="selected">全部</option>
<c:forEach var="dataSource" items="${dataSources }">
<c:choose>
<c:when test="${obj.dataSources == dataSource.dataSourceName}">
<option code="${dataSource.dataSourceCode}" value="${dataSource.dataSourceName }" selected="selected">${dataSource.dataSourceName}</option>
</c:when>
<c:otherwise>
<option code="${dataSource.dataSourceCode}" value="${dataSource.dataSourceName }">${dataSource.dataSourceName}</option>
</c:otherwise>
</c:choose>
</c:forEach>
</select>
</div>
<!-- 二级选择框 -->
<div class="col-sm-2" style="width:110px;">
<label class="control-label" for="txt_search_departmentname">信息来源</label>
<select class="form-control" id="infoSource">
<option value="" selected="selected">全部</option>
</select>
</div>
<div class="col-sm-1" style="text-align:left;">
<button class="btn btn-primary" id="btn_query" type="button" style="margin-top:29px">查询</button>
</div>
</div>
</form>
</div>
</div>
<!-- 查询结果的列表显示位置 -->
<div class=table-responsive">
<table id="Table_queryList" class="table text-nowrap"></table>
</div>
</div>
<script src="static/js/jquery-1.10.1.min.js"></script>
<script src="static/bootstrap-3.3.5-dist/js/bootstrap.js"></script>
<script src="static/bootstrap-table/bootstrap-table.js"></script>
<script src="static/bootstrap-table/locale/bootstrap-table-zh-CN.js"></script>
<script src="static/bootstrap-select/bootstrap-select.js"></script>
<script src="static/jsUtil/jquery.form.js"></script>
<script src="static/js/zaiqing_shenhe.js"></script>
</body>
zaiqing_shenhe.js
$(function () {
//二级联动 绑定事件 ：数据来源》信息来源
$("#dataSource").change(function(){
var infoSourceArr=[
{
"全部":[
"灾害大典",
"灾情普查",
"灾情直报",
"网络媒体",
"微博",
"墨迹天气",
"河北天气",
"其他"
]
},
{
"互联网":[
"网络媒体",
"微博",
"墨迹天气",
"河北天气",
"其他"
]
},
{
"气象部门":[
"灾害大典",
"灾情普查",
"灾情直报",
"其他"
]
}
]
var dataSourceVal=$("#dataSource").find("option:selected").val();//一级下拉框，选中值
dataSourceVal = dataSourceVal.replace( /^\s+|\s+$/g, "" );//去除字符中 空格
var infoSource=$("#infoSource");
for(var i in infoSourceArr){
for(var j in infoSourceArr[i]){
j = j.replace( /^\s+|\s+$/g, "" );
if(dataSourceVal==j){
var infoSourceSecondArrVal=infoSourceArr[i][j];
}
}
}
document.getElementById("infoSource").options.length = 1; //清空select标签中option选项=0,只留一项=1
//根据一级下拉框选中值，加载相应的二级下拉框选项
for (var k in infoSourceSecondArrVal){//(var k=0;k<infoSourceSecondArrVal.length;k++)则浏览器调试出错：Uncaught TypeError: Cannot read property 'length' of undefined
infoSource.append('<option value="'+infoSourceSecondArrVal[k]+'" >'+infoSourceSecondArrVal[k]+'</option>')
}
});
});
//查询》列表显示
var TableInit = function () {
...
//初始化Table
oTableInit.Init = function (pageNumber) {
...
//得到查询的参数
oTableInit.queryParams = function (params) {
var temp = { //这里的键的名字和控制器Controller里的变量名必须一致
...
dataSource: $("#dataSource").find("option:selected").val(),
infoSource: $("#infoSource").find("option:selected").val(),
...
};
...
};
$('#Table_queryList').bootstrapTable('destroy').bootstrapTable({
...
})
};
...
}; 
