<button type="button" class="btn btn-white" id="closeTree">关闭</button>
<script type="text/javascript">
$(function(){
$("#closeTree").click(function(){
$("#areaTreeModal2").modal("hide");
$("body").addClass("modal-open");
});
});
</script>
Bootstrap中模态框多层嵌套时上下滚动条问题
原文：https://www.cnblogs.com/HwChinchilla/p/8941964.html
