新增结算表，结束时间需大于开始时间

src/main/resources/templates/admin/project_settle_add.ftl

@@ -416,11 +416,15 @@
     layui.use('laydate', function(){
         var laydate = layui.laydate;
 
+        var startMonth = $("#startMonth").val();
+        console.log("startMonth: " + startMonth);
+
         laydate.render({
             elem: '#endMonth',
             type: 'month',
             btns: ['confirm'],
             trigger: 'click',
+            min: startMonth + '-1',
             ready: function(date){
                 console.log(date);
             }