用Ajax遍历三级下拉框

//通过一级分类的id查二级分类（记得在前端网页按钮绑定点击事件）

function getSecondCategory(oneCategoryId){

	alert("a")

	$.post("${pageContext.request.contextPath}/category/findSecondCategory",{"oneCategoryId":oneCategoryId},function(data){

		$("[name='categoryLevel2Id']").html("<option value='0'>-请选择-</option>");

		$(data).each(function(i,e){

			var content = "<option value="+e.id+" onclick='getThirdCategory("+e.id+")'>"+e.name+"</option>";

			$("[name='categoryLevel2Id']").append(content);

		});

	},"json");

}

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//通过二级分类的id查三级分类
function getThirdCategory(secondCategoryId){
alert(“a”)
.post(".post(".post("{pageContext.request.contextPath}/category/findThirdCategory",{“secondCategoryId”:secondCategoryId},function(data){

		$("[name='categoryLevel3Id']").html("<option value='0'>-请选择-</option>");

		$(data).each(function(i,e){

			var content = "<option value="+e.id+">"+e.name+"</option>";

			$("[name='categoryLevel3Id']").append(content);

		});

	},"json");

}

</script>

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效果图在这里插入图片描述