fix bugs

static/js/index.js

@@ -2,6 +2,7 @@
 $(document).ready(function () {
     var results = Array();
     var ctime;
+    var flag_again = false;
     var flag_create = false;
     var score = 0;
     var usetime = 0;
@@ -25,25 +26,71 @@ $(document).ready(function () {
     });
     $("#create").click(function (e) {
         e.preventDefault();
-        $("#show").hide();
-        if (module) {
-            if (parseFloat(btn.text()) == 0 || btn.text() == "") {
-                results = [];
-                score = 0;
-                usetime = 0;
-                begin();
-            } else {
-                return;
+        if (!flag_again) {
+            flag_again = true;
+            console.log(flag_again);
+            if (language == 1 && confirm("答题须知：除法的商请以分数形式输入！示例：1 ÷ 2 = 1/2！")) {
+                $("#show").hide();
+                if (module) {
+                    if (parseFloat(btn.text()) == 0 || btn.text() == "") {
+                        results = [];
+                        score = 0;
+                        usetime = 0;
+                        begin();
+                    } else {
+                        return;
+                    }
+                } else {
+                    if (language != -1) {
+                        alert("请先选择出题模式。");
+                    } else {
+                        alert("Please Choose Module First!");
+                    }
+                }
+            } else if (language == -1 && confirm("Answer note: Please enter the quotient of division as a fraction! Such as: 1 ÷ 2 = 1/2！")) {
+
+                $("#show").hide();
+                if (module) {
+                    if (parseFloat(btn.text()) == 0 || btn.text() == "") {
+                        results = [];
+                        score = 0;
+                        usetime = 0;
+                        begin();
+                    } else {
+                        return;
+                    }
+                } else {
+                    if (language != -1) {
+                        alert("请先选择出题模式。");
+                    } else {
+                        alert("Please Choose Module First!");
+                    }
+                }
             }
         } else {
-            if (language != -1) {
-                alert("请先选择出题模式。");
+            $("#show").hide();
+            if (module) {
+                if (parseFloat(btn.text()) == 0 || btn.text() == "") {
+                    results = [];
+                    score = 0;
+                    usetime = 0;
+                    begin();
+                } else {
+                    return;
+                }
             } else {
-                alert("Please Choose Module First!");
+                if (language != -1) {
+                    alert("请先选择出题模式。");
+                } else {
+                    alert("Please Choose Module First!");
+                }
             }
         }
 
-        console.log(results);
+
+
+
+        //console.log(results);
     });
     $("#exchange").change(function (e) {
         e.preventDefault();
@@ -155,7 +202,9 @@ $(document).ready(function () {
                     var tmp = res[i].result;
                     var reg = /\s+/g;
                     //console.log(typeof tmp + " " + tmp);
-                    tmp = tmp.replace(reg, "");
+                    if (typeof tmp == "string") {
+                        tmp = tmp.replace(reg, "");
+                    }
                     //results.push(res[i].result);
                     results.push(tmp);
                 }