退格对应的事件处理

resources/app/history.html

@@ -176,13 +176,17 @@
     const keydown = () => {
         document.onkeydown=function(event){
             var e = event || window.event || arguments.callee.caller.arguments[0];
-            if(e && e.keyCode==13){
+            if(e && e.keyCode == 13){
                 //要做的事情
                 if(isclick == true){
                     HistorySelect()
                 }
             }
-            
+            if(e && e.keyCode == 8){
+                if($('#SelectInp')[0].value.length == 1) {
+                    xianshi()
+                }
+            }
         };
     }
     window.onload = () => {