添加错误处理。修复教务系统alert后无法继续选课的bug

shuake.js

@@ -38,25 +38,37 @@ function gogogo(){
 	//选课gogogo！
 	$("#electableLessonList_filter_submit").click(); //模拟点击查询
 	setTimeout(function(){
-		if($("#electableLessonList_data").find("td[class=stdCount]")[0].innerHTML == "0"){
-			//没有剩余名额
-			console.log("课程人数已满，" + refresh_time + "秒后再试");
-			setTimeout("gogogo()", refresh_time * 1000 - 1000)
-		}else{
-			console.log("有了");
-			//屏蔽confirm
-			_tmp_confirm = window.confirm;
-			window.confirm = function () {
-				return true;
-			};
-			//模拟点击选课按钮
-			$("#electableLessonList_data").find("a[operator=ELECTION]").click()
-			//恢复confirm
-			window.confirm = _tmp_confirm
+		try{
+			if($("#electableLessonList_data").find("td[class=stdCount]")[0].innerHTML == "0"){
+				//没有剩余名额
+				console.log("课程人数已满，" + refresh_time + "秒后再试");
+				setTimeout("gogogo()", refresh_time * 1000 - 200)
+			}else{
+				console.log("有了");
+				//模拟点击选课按钮
+				$("#electableLessonList_data").find("a[operator=ELECTION]").click()
+				//恢复confirm和alert
+				window.confirm = _tmp_confirm
+				window.alert = _tmp_alert
+			}
+		}catch(err){
+			console.log(err);
+			console.log("雾草，出错了，不过没关系，刷课还在继续");
+			setTimeout("gogogo()", refresh_time * 1000 - 200)
 		}
-	}, 1000)
+	}, 200)	//这里的200毫秒是request时间，因为没有回调，所以写死了200
 
 }
 
-refresh_time = 3;	//刷课间隔，可以手动修改，最低为2！
+//屏蔽教务系统的错误alert和确认comfirm
+_tmp_alert = window.alert
+window.alert = function () {
+	return true;
+};
+_tmp_confirm = window.confirm;
+window.confirm = function () {
+	return true;
+};
+
+refresh_time = 1.1;	//刷课间隔，可以手动修改，最低为1
 setNo();