lfcoding1 · lfcoding1 · commit ebdf60a55320 · 2018-10-14T22:22:47.000+02:00
upload after homework session at HYF
diff --git a/week1js/10program.js b/week1js/10program.js
@@ -1,7 +1,19 @@
 var program = [23, "this is a string", 13, "yellow",];
 console.log(program);
+console.log("Yes you can:", program);
 
+/*my answer, better answer is below
 var compare = 6/0 === 10/0;
 console.log(compare);
-var compareneg = -6/0 === 10/0;
-console.log(compareneg);
+var compareNeg = -6/0 === 10/0;
+console.log(compareneg);*/
+
+function compares(x, y){
+    if (x /0 === y/0){
+        console.log("Yes they are the same");
+        console.log(x / y);
+        } else {
+        console.log("no they are not equal");
+    }
+}
+compares(6, 10);
diff --git a/week1js/8sametype.js b/week1js/8sametype.js
@@ -18,7 +18,9 @@ var type_c = typeof x;
 var type_d = typeof null;
 
 if( type_a == type_b | type_c | type_d)
-{console.log('SAME TYPE');}
+{console.log('SAME TYPE');} 
 else
 {console.log('DIFFERENT TYPE');}
 
+/*this is not completely correct, there should be an if loop for every comparison, not 'just type a' being
+compared to each of the other types.  You could also use  a for loop*/
diff --git a/week1js/index.html b/week1js/index.html
@@ -11,7 +11,7 @@
    <script src ="3variablex.js"></script>
    <script src ="2Imawesome.js"></script>
    <script src ="1hworldlanguages.js"></script>
-   <script src = "dummy.js"></script>
+
 </head>
 <body>
   hello world
diff --git a/week2js/1strings.js b/week2js/1strings.js
@@ -5,4 +5,11 @@ let stringLength = myString.length;
 console.log(stringLength);
 
 let myString_new = "hello " +"this "+ "is a " + "difficult " + "to read " + "sentence";
-console.log(myString_new);
+console.log(myString_new);
+
+//alternative, better way to do it://
+myString = myString.replace(/,/g, " ");
+console.log(myString);
+
+//note: the /g means to use 'global' scope.  if you didn't put this in, only the hello is separated with a space//
+
diff --git a/week2js/2arrays.js b/week2js/2arrays.js
@@ -2,12 +2,19 @@ let favoriteAnimals = ['blowfish', 'capricorn', 'giraffe'];
 console.log(favoriteAnimals);
 favoriteAnimals.push("turtle");
 console.log(favoriteAnimals);
+
 favoriteAnimals.splice(1, 0, "meerkat");
 console.log("I think the new value of the array is many favorite animals");
 console.log(favoriteAnimals);
+// 0 here means: do not delete anything, ie splice, what is going in, what is going out....//
+//..we are putting something in at position 1, but we are not taking anything out, ie 0//
+
 let favAnimalsLength = favoriteAnimals.length;
 console.log("The array has a length of: " + favAnimalsLength);
-favoriteAnimals.pop("giraffe");
+favoriteAnimals.splice(3, 1);
 console.log(favoriteAnimals);
+/*if you used pop here it would only delete the last animal.  use splice here because giraffe is not the
+last item and that is what you to delete*/
+
 let a = favoriteAnimals.indexOf("meerkat");
 console.log("The item you are looking for is at index: " + a );
diff --git a/week2js/3tada12_14.js b/week2js/3tada12_14.js
@@ -1,5 +1,6 @@
 // 12. empty object //
-const myObject = {}
+let obj = {};
+console.log(obj);
 
 // 13/ and 14. teachers //
 const myTeachers = {
@@ -8,5 +9,8 @@ const myTeachers = {
     "Victor": "CSS", 
     "Rasmus": "Javascript", 
     "Johann": "Javascript"
-};
-console.log(myTeachers);
+}
+console.log(myTeachers);
+
+
+
diff --git a/week2js/3tada15_17.js b/week2js/3tada15_17.js
@@ -3,7 +3,26 @@ let x = [1,2,3];
 let y = [1,2,3]; 
 let z = y;
 
-function compare(a, b) {
+x == y ? console.log("equal") : console.log("not equal");
+x === y ? console.log("equal") : console.log("not equal");
+z == x ? console.log("equal") : console.log("not equal");
+z === x ? console.log("equal") : console.log("not equal");
+z == y ? console.log("equal") : console.log("not equal");
+z === y ? console.log("equal") : console.log("not equal");
+/*Why is these equal/not equal? because x and y might have the same looking info in it, they are not the same objects.
+but z and y do have the same objects, because they are both just pointers pointing to the same box.
+x and y are both pointing to two different boxes which both happen to have the same info in it.*/
+
+
+/*assigning variable by content or reference , ie z = y is saying that z has the same 'address' as y does.//
+ie they both point to the same box, with the box being the [] stuff
+note: x does not equal y in this case because they do not point to the same object.
+ie: their objects look the same, but they are two different boxes, whilst z is only pointing to y's box,
+it is not actually making a whole new box for z */
+/*THIS CODE DOESN'T OUTPUT THE RIGHT INFO.  THE LAST SHOULD BE FALSE */
+
+
+/*function compare(a, b) {
     var i = a.length;
     if (i != b.length) return false;
     while (i--) {
@@ -13,7 +32,7 @@ function compare(a, b) {
 }
 console.log(compare(x, y));
 console.log(compare(z, y));
-console.log(compare(z, x));
+console.log(compare(z, x));*/
 
 
 
@@ -28,6 +47,8 @@ console.log(o3);
 o2.foo = 'chicken';
 console.log(o2);
 console.log(o3);  // yes o3 has been changed//
+/* this is the same as question 15, o2 and o3 both point to the same box. so when you change the box 
+contents, both o2 and o3 change because they are both pointing to that box.*/node
 
 // 17. type of//
 let bar = 42;  
diff --git a/week2js/3tada1_5.js b/week2js/3tada1_5.js
@@ -9,27 +9,42 @@ function sum(){
   }
 
   console.log(sum(1, 2, 5));
+
+    /* someone elses response to question 1:
+  var a, b, c;
+  function sumOfThree(a,b,c){
+      console.log(a+b+c);
+  }
+  sumOfThree(1, 'b', 3);
+  sumOfThree('ab', 'c', 'd');*/
+
  
 //2. colorCar function//
 function colorCar(color){
     console.log("The " + color + " car");
 }
 colorCar("red");
+colorCar("orange");
 
 //3.Object and function//
 let dog = {
     breed: "husky",
-    name: "woof",
+    name: "Roger",
     age: 12,
 }
 function thisDog(obj){
     console.log(obj);
 }
 thisDog(dog);
-
-
-
-//4. Vehicle Type//
+/*so when the let variable 'dog' was created, it became a list by the way that the
+information was entered, ie name: age: etc).  then the function asks that we print an obj when it is called
+ie the command is : console.log(obj).  so the functions' purpose is to print an object when 
+'thisDog' is called.
+the object is not yet identified, it could be any object.  when we call the function
+ we put the name of the object in the brackets, which in this case is 'dog'
+so: thisDog(dog); will print out whatever is within the object called 'dog'. */
+
+//4. Vehihcle Type//
 var code = (a === 2) ? "car":"motorbike";
 var color = "blue";
 function vehicleType(color, code){
@@ -39,6 +54,9 @@ vehicleType(color, code);
 
 //5. single line //
 console.log(3 === 3) ? console.log("yes"): console.log("no");
+/* or you can write it like this:
+console.log(3 === 3 ? "yes" : "no");
+it will do the same thing as above*/
 
 
 
diff --git a/week2js/3tada6_11.js b/week2js/3tada6_11.js
@@ -1,14 +1,16 @@
-//6. vehicle //
-var code = (a === 2) ? "car":"motorbike";
-var color = "blue";
+//6. vehicle 
+
+
+var vehicle = ["motorbike", "caravan", "bike", "scooter", "car", "truck"];
 var age = (age === 1) ? "new":"used";
-function vehicleType(color, age, code){
- console.log("A " + color + " " + age + " " + code);
+
+console.log(vehicle[5]);
+function vehicleType(color, age, vehicle){
+ console.log("A " + color + " " + age + " " + vehicle);
 }
-vehicleType(color, age, code);
+vehicleType("pink", "used", "car");
 
 //7. list of vehicles//
-var vehicle = ["motorbike", "caravan", "bike", "scooter", "car", "truck"];
 console.log(vehicle);
 
 //8 3rd element//
@@ -23,9 +25,18 @@ function getVehicle(color, index, age){
 }
 getVehicle("Green", 2, vehicle[3]);
 
-//10. advertisement//
-
+/*try this code:
+function vehicles(color, code, age) {
+    if (age > 1){
+        console.log( 'a ' + color + ' used ' +list[code])
+    } else if (age <= 1){
+        console.log('a ' + color + ' new ' + list[code])
+    }
+}
+console.log("vehicle('green', 3, 1) ===> " + vehicle("green", 3, 1));
+vehicles("green", 3, 1);*/
 
+//10. advertisement//
 
 function garage(){
     var advertisement = ("At Amazing Joe's Garage, we service: ");
