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Improved layout of exercises
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‎fundamentals/exercises.md

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@@ -8,41 +8,49 @@ var x = s.toLowerCase();
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var l = s.length;
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```
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Indicate the type of each:
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**1. Indicate the type of each:**
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A. `s`
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B. `x`
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C. `s.toLowerCase( )`
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D. `s.toLower Case`
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E. `s.length`
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F. `l`
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A. `s`
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B. `x`
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C. `s.toLowerCase( )`
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D. `s.toLower Case`
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E. `s.length`
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F. `l`
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### In `var x = 5 + 6;`, what is `+`?
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----
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A. Function
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B. Operator
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C. Number
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D. Aggregator
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### 2. In `var x = 5 + 6;`, what is `+`?
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### In `var x = 5 + 6;`, what is 'var'?
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A. Function
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B. Operator
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C. Number
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D. Aggregator
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A. Variable
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B. Keyword
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C. Operator
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D. Constant
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----
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### 3. In `var x = 5 + 6;`, what is 'var'?
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A. Variable
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B. Keyword
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C. Operator
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D. Constant
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----
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### Given the following code:
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```js
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var x = z[y];
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```
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What is `y`:
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**4. What is `y`?**
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A. Index
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B. Key
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C. Index or key
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D. Array
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A. Index
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B. Key
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C. Index or key
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D. Array
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----
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### Given the following code:
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@@ -52,12 +60,41 @@ var x = [1, 2, 3];
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var z = x[y];
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```
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What is `y`:
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**5. What is `y`?**
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A. Index
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B. Key
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C. Index or key
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D. Array
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----
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### Given the following code:
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```js
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var joe = {
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name: 'Joe',
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age: 24
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};
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var joesName = joe.name;
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var joesAge = joe['age'];
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```
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**6. What is `'age'` in the last line?**
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A. Index
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B. Key
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C. Index or key
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D. Array
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C. Property
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D. Object
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**7. What are `name` and `age` of the object `joe`?**
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A. Index
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B. Key
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C. Object
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D. Property
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----
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### Given the following code:
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@@ -67,32 +104,45 @@ var x = [1, 2, 3];
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var z = x[y];
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```
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What is `y`:
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**7. What is `y`**
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A. Index
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B. Key
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C. Index or key
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D. Array
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A. Index
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B. Key
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C. Index or key
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D. Array
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**8. What is the element for index `1` in array `x`?**
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### What is the name of these functions?
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**9. Fill in: "The value of the (...) `length` of `x` is (...)"**
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A. `function a() { return true; }`
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B. `var a = function b() { return true; }`
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C. `var c = function () { return true; }`
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----
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### Write a function that has two parameters called `first` and `second`
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### 10. What is the name of these functions?
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### Write a function call that passes three arguments.
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A. `function a() { return true; }`
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B. `var a = function b() { return true; }`
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C. `var c = function () { return true; }`
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### Write code for the following
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----
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A. Declare a variable called `x` and initialize it with the string "Hello".
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B. Declare a variable called `y` and initialize it with the property `length` of `x`.
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C. Declare a variable called `z` and initialize it with the result of calling the method `toUpperCase` on `x`
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D. Declare a function called `myFunction`. This function should take two arguments, and should call the second argument with the first argument as its argument. Then, declare a variable called `f` and initialize it with an empty anonymous function, and call `myFunction` with the arguments `10` and `f`.
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### 11. Write a function that has two parameters called `first` and `second`
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### Explain as precisely as possible (in English) what the following code does, line by line
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----
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### 12. Write a function call that passes three arguments.
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----
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### 13. Write code for the following
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A. Declare a variable called `x` and initialize it with the string "Hello".
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B. Declare a variable called `y` and initialize it with the property `length` of `x`.
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C. Declare a variable called `z` and initialize it with the result of calling the method `toUpperCase` on `x`
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D. Declare a function called `myFunction`. This function should take two arguments, and should call the second argument with the first argument as its argument. Then, declare a variable called `f` and initialize it with an empty anonymous function, and call `myFunction` with the arguments `10` and `f`.
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----
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### 14. Explain as precisely as possible (in English) what the following code does, line by line
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(Tip: it should look like the items in the previous question!)
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@@ -104,27 +154,29 @@ var s = sum(4, 5);
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var r = Math.sqrt(s);
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```
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----
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## Arrays & objects
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### 15. Indicate for each of these whether it is an expression or a statement:
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A. `l`
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B. `l = 4;`
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C. `l == 4`
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D. `if (l == 4) { console.log("yes"); }`
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E. `console.log("yes");`
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F. `"yes"`
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G. `console.log(l == 4 ? "yes" : "no")`
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H. `function a() { return 4; }`
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I. `var a = function () { return 4; }`
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## Statements & expressions
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----
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### Indicate for each of these whether it is an expression or a statement:
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### 16. How can you tell whether something is a statement?
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A. `l`
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B. `l = 4;`
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C. `l == 4`
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D. `if (l == 4) { console.log("yes"); }`
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E. `console.log("yes");`
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F. `"yes"`
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G. `console.log(l == 4 ? "yes" : "no")`
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H. `function a() { return 4; }`
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I. `var a = function () { return 4; }`
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----
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### How can you tell whether something is a statement?
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### 17. How can you tell whether something is an expression
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### How can you tell whether something is an expression
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----
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### Given the following code:
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}
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```
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A. List all 11 *statements* in the code above
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B. List all 23 *expressions* in the code above (BONUS!)
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**18. List all 11 *statements* in the code above**
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**19. List all 23 *expressions* in the code above (BONUS!)**

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