解决报错

index.html

@@ -154,20 +154,20 @@
                   var completeBtn = dom.querySelector('.completeBtn');
                   var btn = unCompleteBtn.querySelector('button');
 
-                  if(res.totalNum - res.completeNum === res.totalNum){
+                  if(res && res.totalNum && (res.totalNum - res.completeNum === res.totalNum)){
                     startBtn.style.display='block';
                     unCompleteBtn.style.display='none';
                     completeBtn.style.display='none';
                     return
                   }
-                  if(res.totalNum > res.completeNum){
+                  if(res && res.totalNum && (res.totalNum > res.completeNum)){
                     btn.innerHTML = res.unComplete + "项未填"
                     startBtn.style.display='none';
                     unCompleteBtn.style.display='block';
                     completeBtn.style.display='none';
                     return
                   }
-                  if(res.totalNum = res.completeNum){
+                  if(res && res.totalNum && (res.totalNum = res.completeNum)){
                     startBtn.style.display='none';
                     unCompleteBtn.style.display='none';
                     completeBtn.style.display='block';