Ported TRAIN, TRAP and 23 MATCHES to Javascript

91 Train/javascript/train.js

@@ -0,0 +1,80 @@
+// TRAIN
+//
+// Converted from BASIC to Javascript by Oscar Toledo G. (nanochess)
+//
+
+function print(str)
+{
+    document.getElementById("output").appendChild(document.createTextNode(str));
+}
+
+function input()
+{
+    var input_element;
+    var input_str;
+    
+    return new Promise(function (resolve) {
+                       input_element = document.createElement("INPUT");
+                       
+                       print("? ");
+                       input_element.setAttribute("type", "text");
+                       input_element.setAttribute("length", "50");
+                       document.getElementById("output").appendChild(input_element);
+                       input_element.focus();
+                       input_str = undefined;
+                       input_element.addEventListener("keydown", function (event) {
+                                                      if (event.keyCode == 13) {
+                                                      input_str = input_element.value;
+                                                      document.getElementById("output").removeChild(input_element);
+                                                      print(input_str);
+                                                      print("\n");
+                                                      resolve(input_str);
+                                                      }
+                                                      });
+                       });
+}
+
+function tab(space)
+{
+    var str = "";
+    while (space-- > 0)
+        str += " ";
+    return str;
+}
+
+// Main control section
+async function main()
+{
+    print(tab(33) + "TRAIN\n");
+    print(tab(15) + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY\n");
+    print("\n");
+    print("\n");
+    print("\n");
+    print("TIME - SPEED DISTANCE EXERCISE\n");
+    print("\n ");
+    while (1) {
+        c = Math.floor(25 * Math.random()) + 40;
+        d = Math.floor(15 * Math.random()) + 5;
+        t = Math.floor(19 * Math.random()) + 20;
+        print(" A CAR TRAVELING " + c + " MPH CAN MAKE A CERTAIN TRIP IN\n");
+        print(d + " HOURS LESS THAN A TRAIN TRAVELING AT " + t + " MPH.\n");
+        print("HOW LONG DOES THE TRIP TAKE BY CAR");
+        a = parseFloat(await input());
+        v = d * t / (c - t);
+        e = Math.floor(Math.abs((v - a) * 100 / a) + 0.5);
+        if (e > 5) {
+            print("SORRY.  YOU WERE OFF BY " + e + " PERCENT.\n");
+        } else {
+            print("GOOD! ANSWER WITHIN " + e + " PERCENT.\n");
+        }
+        print("CORRECT ANSWER IS " + v + " HOURS.\n");
+        print("\n");
+        print("ANOTHER PROBLEM (YES OR NO)\n");
+        str = await input();
+        print("\n");
+        if (str.substr(0, 1) != "Y")
+            break;
+    }
+}
+
+main();