let 1

00-asserting/2-isolate/1-variables/exercises/1-let.js

@@ -9,19 +9,19 @@ console.log('-- begin --');
 // and don't just write the correct answer directly!
 //  you should use firstFiveLetters to fill in one blank for each step
 
-_;
+let firstFiveLetters = 'c';
 console.log(firstFiveLetters); // should log "c"
 
-firstFiveLetters = _ + _;
+firstFiveLetters = 'b' + firstFiveLetters;
 console.log(firstFiveLetters); // should log "bc"
 
-firstFiveLetters = _ + _;
+firstFiveLetters += 'd';
 console.log(firstFiveLetters); // should log "bcd"
 
-firstFiveLetters = _ + _;
+firstFiveLetters = 'a' + firstFiveLetters;
 console.log(firstFiveLetters); // should log "abcd"
 
-firstFiveLetters = _ + _;
+firstFiveLetters += 'e';
 console.log(firstFiveLetters); // should log "abcde"
 
 console.log('-- end --');

00-asserting/2-isolate/1-variables/exercises/2-let.js

@@ -13,13 +13,13 @@ let fruit = 'banana';
 let desert = 'cake';
 let topping = 'frosting';
 
-_;
+desert = 'chocolate ' + desert;
 console.log(desert); // should log 'chocolate cake'
 
-_;
+desert += ' ' + 'with' + ' ' + topping;
 console.log(desert); // should log 'chocolate cake with frosting'
 
-_;
+desert += ' and ' + fruit
 console.log(desert); // should log 'chocolate cake with frosting and banana'
 
 console.log('-- end --');

00-asserting/2-isolate/1-variables/exercises/3-let-or-const.js

@@ -20,34 +20,34 @@ console.log('-- begin --');
 */
 
 // declare a variable named aTree, don't assign a value!
-_;
+let aTree;
 console.log(aTree);
 
 // assign the value "birch" to the variable aTree
-_;
+aTree = 'brich';
 console.log(aTree);
 
 // declare a variable named turtle and assign it the name "myrtle"
-_;
+let turtle = 'myrtle';
 console.log(turtle);
 
 // reassign aTree to "aspen"
-_;
+aTree = 'aspen';
 console.log(aTree);
 
 // declare a variable named aColor with the value "blue"
-_;
+let aColor = 'blue';
 console.log(aColor);
 
 // log the value of turtle
-_;
+console.log(turtle);
 
 // reassign aTree to "oak"
-_;
+aTree = 'oak';
 console.log(aTree);
 
 // reassign aColor to "orange"
-_;
+aColor = 'orange';
 console.log(aColor);
 
 console.log('-- end --');

00-asserting/2-isolate/1-variables/exercises/4-let-or-const.js

@@ -19,25 +19,25 @@ console.log('-- begin --');
 
 */
 
-_;
+let x = 'a';
 console.log(x); // should print 'a'
 
-_;
+let y = 'b';
 console.log(y); // should print 'b'
-
+x = 'a'
 console.log(x); // should print 'a'
 
-_;
+let z;
 console.log(z); // should print undefined
-
+y = 'b'
 console.log(y); // should print 'b'
 
-_;
+z = 'c'
 console.log(z); // should print 'c'
 
-_;
+y += 'd'
 console.log(y); // should print 'bd'
-
+x = 'a'
 console.log(x); // should print 'a'
 
 console.log('-- end --');

00-asserting/2-isolate/1-variables/exercises/5-let-or-const.js

@@ -19,26 +19,26 @@ console.log('-- begin --');
 
 */
 
-_;
+let furniture = 'chair'
 console.log(furniture); // should log 'chair'
 
-_;
+let building = 'house'
 console.log(building); // should log 'house'
 
 furniture = 'table';
-console.log(_); // should log 'table'
+console.log(furniture); // should log 'table'
 
-_;
+let food;
 console.log(food); // should log undefined
 
-_;
+food = 'apple';
 console.log(food); // should log 'apple'
 
-console.log(_); // should log 'house'
+console.log(building); // should log 'house'
 
-console.log(_); // should log 'table'
+console.log(furniture); // should log 'table'
 
-_;
-console.log(_); // should log 'apple, pear'
+food += ' pear ';
+console.log(food); // should log 'apple, pear'
 
 console.log('-- end --');

00-asserting/2-isolate/2-comparing-and-asserting/exercises/1-let.js

@@ -4,19 +4,19 @@
 
 console.log('-- begin --');
 
-_;
+let letters = 'c';
 console.assert(letters === 'c', 'Test 1');
 
-letters = _ + _;
+letters = 'b' + letters;
 console.assert(letters === 'bc', 'Test 2');
 
 letters = letters + 'd';
-console.assert(letters === _, 'Test 3');
+console.assert(letters === 'bcd', 'Test 3');
 
 letters = 'a' + letters;
-console.assert(letters === _, 'Test 4');
+console.assert(letters === 'abcd', 'Test 4');
 
-letters = _ + _;
+letters += 'e';
 console.assert(letters === 'abcde', 'Test 5');
 
 console.log('-- end --');

00-asserting/2-isolate/2-comparing-and-asserting/exercises/2-let.js

@@ -8,13 +8,13 @@ let fruit = 'banana';
 let desert = 'cake';
 let topping = 'frosting';
 
-_;
+desert ='chocolate ' + desert;
 console.assert(desert === 'chocolate cake', 'Test 1');
 
 desert = desert + ' with ' + topping;
-console.assert(desert === _, 'Test 2');
+console.assert(desert === 'chocolate cake with frosting', 'Test 2');
 
-_;
-console.assert(desert === ,'Test 3');
+desert += ' and banana';
+console.assert(desert === 'chocolate cake with frosting and banana','Test 3');
 
 console.log('-- end --');

00-asserting/2-isolate/2-comparing-and-asserting/exercises/3-let-or-const.js

@@ -4,7 +4,7 @@
 
 console.log('-- begin --');
 
-/* fill in the blanks to pass the assertions
+/* fill in the bladesertnks to pass the assertions
 
   pay close attention to how each variable is used!
   - is a variable assigned a value when it is declared?
@@ -19,27 +19,27 @@ console.log('-- begin --');
 
 */
 
-__;
+let aTree = '';
 console.assert(aTree === '', 'Test 1');
 
 aTree = 'birch';
-console.assert(__ === __, 'Test 2');
+console.assert(aTree === 'birch', 'Test 2');
 
-__;
+let turtle = 'myrtle';
 console.assert(turtle === 'myrtle', 'Test 3');
 
-__;
+aTree = 'aspen';
 console.assert(aTree === 'aspen', 'Test 4');
 
-__;
+let aColor = 'blue';
 console.assert(aColor === 'blue', 'Test 5');
 
-console.assert(turtle === __, 'Test 6');
+console.assert(turtle ==='myrtle', 'Test 6');
 
-__ = 'oak';
-console.assert(aTree === __, 'Test 7');
+aTree = 'oak';
+console.assert(aTree === 'oak', 'Test 7');
 
-aColor = __;
-console.assert(__ === 'orange', 'Test 8');
+aColor = 'orange';
+console.assert(aColor === 'orange', 'Test 8');
 
 console.log('-- end --');

00-asserting/2-isolate/2-comparing-and-asserting/exercises/4-let-or-const.js

@@ -19,25 +19,25 @@ console.log('-- begin --');
 
 */
 
-__;
+let x = 'a';
 console.assert(x === 'a', 'Test 1');
 
-__;
+let y = 'b';
 console.assert(y === 'b', 'Test 2');
-
+x = 'a';
 console.assert(x === 'a', 'Test 3');
 
-__;
+let z = '';
 console.assert(z === '', 'Test 4');
-
+y = 'b';
 console.assert(y === 'b', 'Test 5');
 
-__;
+z = 'c';
 console.assert(z === 'c', 'Test 6');
 
-__;
+y += 'd';
 console.assert(y === 'bd', 'Test 7');
-
+x = 'a'
 console.assert(x === 'a', 'Test 8');
 
 console.log('-- end --');

00-asserting/2-isolate/2-comparing-and-asserting/exercises/5-let-or-const.js

@@ -19,26 +19,26 @@ console.log('-- begin --');
 
 */
 
-__;
+let furniture = 'chair';
 console.assert(furniture === 'chair', 'Test 1');
 
-__;
+let building = 'house';
 console.assert(building === 'house', 'Test 2');
 
 furniture = 'table';
-console.assert(__ === __, 'Test 3');
+console.assert(furniture === 'table', 'Test 3');
 
-__;
+let food = '';
 console.assert(food === '', 'Test 4');
 
-__ = 'apple';
-console.assert(food === __, 'Test 5');
+food = 'apple';
+console.assert(food === 'apple', 'Test 5');
 
-console.assert(__ === 'house', 'Test 6');
+console.assert(building === 'house', 'Test 6');
 
-console.assert(__ === 'table', 'Test 7');
+console.assert(furniture === 'table', 'Test 7');
 
-food = __;
-console.assert(__ === 'pear', 'Test 8');
+food = 'pear' ;
+console.assert(food === 'pear', 'Test 8');
 
 console.log('-- end --');

00-asserting/2-isolate/3-value-swaps/exercises/1-double-swap.js

@@ -11,6 +11,17 @@ let b = 'x';
 let temp;
 
 // --- swap values ---
+temp = a;
+console.assert(temp === 'y', 'Step 1.1');
+console.assert(a === 'y', 'Step 1.2');
+
+a = b;
+console.assert(a === 'x', 'Step 2.1');
+console.assert(b === 'x', 'Step 2.2');
+
+b = temp;
+console.assert(b === 'y', 'Step 3.1');
+console.assert(temp === 'y', 'Step 3.2');
 
 // --- test final values ---
 
@@ -20,7 +31,7 @@ console.assert(test1, 'Test 1');
 const test2 = b === 'y';
 console.assert(test2, 'Test 2');
 
-const test3 = temp === _;
+const test3 = temp === 'y';
 console.assert(test3, 'Test 3');
 
 console.log('-- end --');

00-asserting/2-isolate/3-value-swaps/exercises/2-triple-swap.js

@@ -14,24 +14,24 @@ let temp;
 // --- swap values ---
 
 temp = a;
-console.assert(temp === _, 'Step 1.1');
-console.assert(a === _, 'Step 1.2');
+console.assert(temp === 'y', 'Step 1.1');
+console.assert(a === 'y', 'Step 1.2');
 a = c;
-console.assert(a === _, 'Step 2.1');
-console.assert(c === _, 'Step 2.2');
+console.assert(a === 'x', 'Step 2.1');
+console.assert(c === 'x', 'Step 2.2');
 c = temp;
-console.assert(c === _, 'Step 3.1');
-console.assert(temp === _, 'Step 3.2');
+console.assert(c === 'y', 'Step 3.1');
+console.assert(temp === 'y', 'Step 3.2');
 
 temp = c;
-console.assert(temp === _, 'Step 4.1');
-console.assert(c === _, 'Step 4.2');
+console.assert(temp === 'y', 'Step 4.1');
+console.assert(c === 'y', 'Step 4.2');
 c = b;
-console.assert(c === _, 'Step 5.1');
-console.assert(b === _, 'Step 5.2');
+console.assert(c === 'z', 'Step 5.1');
+console.assert(b === 'z', 'Step 5.2');
 b = temp;
-console.assert(b === _, 'Step 6.1');
-console.assert(temp === _, 'Step 6.2');
+console.assert(b === 'y', 'Step 6.1');
+console.assert(temp === 'y', 'Step 6.2');
 
 // --- test final values ---
 
@@ -41,6 +41,6 @@ console.assert(b === 'y', 'Test 2');
 
 console.assert(c === 'z', 'Test 3');
 
-console.assert(temp === _, 'Test 4');
+console.assert(temp === 'y', 'Test 4');
 
 console.log('-- end --');