//此种为异步，还不等ajax赋完值，函数就return了。
function getCaseInfoForMap(){
var formInfo=$("#firstForm").serialize();
var dd;
$.ajax({
type:"post",
url:"<%=path %>/webmodule/constructionDecision/WjInfo/getCaseInfoForMap.do?timeType="+timeType+"&gridNumber="+gridNumber,
dataType:"json",
data:formInfo,
success:function(data){
dd=data;
}
});
return dd;//
}
//测试
function test(){
var data=getCaseInfoForMap();
alert(data[0].caseId);
}

//此种为同步async:false,ajax执行不完不会return
function getCaseInfoForMap(){
var formInfo=$("#firstForm").serialize();
var dd="";
$.ajax({
type:"post",
url:"<%=path %>/webmodule/constructionDecision/WjInfo/getCommCaseInfoCount.do?timeType="+timeType+"&gridNumber=110105217",
dataType:"json",
data:formInfo,
async:false,
success:function(data){
dd=data;
}
});
return dd;
}
//测试
function test(){
var data=getCaseInfoForMap();
alert(data);

}