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Commit to functions #6

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bash (terminal) completed
Karguo Sep 21, 2018
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JS variables completed
Karguo Sep 21, 2018
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JS conditionals completed
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JS arrays completed
Karguo Sep 21, 2018
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Karguo Sep 21, 2018
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53 changes: 50 additions & 3 deletions README.md
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Expand Up @@ -7,23 +7,39 @@
1. Make two directories inside `~/buffy`: `scoobies` and `vamps`
<br><br><br>

## Answer
mkdir scoobies
mkdir vamps

2. Make files in `scoobies` named `buffy.txt`, `giles.txt` and `angel.txt`
<br><br><br>

## Answer
cd scoobies
touch buffy.txt
touch giles.txt
touch angel.txt

3. Copy `angel.txt` into the `vamps` directory
<br><br>
## Answer
cp /angel.txt ./vamps

4. Delete the `vamps` directory and everything inside it
<br><br>
## Answer
rm /vamps

### JS Variables

1. Assign the string "Jack" to a variable called `captain`
<br><br>
## Answer
var captain = 'Jack';

2. Using the `captain` variable, use string concatenation to form the string "Oh Jack, my Jack!", assigning it to a variable named `phrase`
<br><br>

var phrase = '"Oh ' + captain + ',' + ' my ' + captain + '!"';

### JS Conditionals
```js
Expand All @@ -33,46 +49,77 @@ var lifeRafts = 2;

1. Write an `if` statement that console.logs "SOS!" if there are more _souls_ than _lifeRafts_
<br><br>

## Answer
if (souls > lifeRafts) {
var say = "okay";
} else {
var say = "SOS!"
}
console.log(say);

### Data Structures - JS Arrays

1. Create an array named `weekend` with just 'Saturday' in it
<br><br>
## Answer
var weekend = ['Saturday'];

2. Add 'Sunday' to the end of the `weekend` array
<br><br>
weekend.push('Sunday');

3. Add 'Friday' to the front to the front of the `weekend` array
<br><br>
weekend.unshift('Friday');

4. Access 'Saturday' in the array and assign to a variable named `day`
<br><br>
var day = weekend[1];

5. Remove 'Friday' from the array
<br><br>
weekend.shift()

### Data Structures - JS Objects

1. Write an object literal named `brain` having a property of `energyLevel` with a value of `10` as a number
<br><br>
var brain = {
energyLevel: 10;
}

2. Assign the property of `energyLevel` to a variable named `energy`
<br><br>
var energy = brain.energyLevel

3. Add a `dream` property to the `brain` object that holds the string 'electric sheep'
<br><br>
brain.dream = 'electric sheep';

4. Add a `dayDream` property to the `brain` object that holds the object `{ lunch: ['burger', 'beer'] }`
<br><br>
brain.dayDream = { lunch: ['burger', 'beer'] };

5. Add another element `pudding` to the lunch array inside the `brain` object
<br><br>
dayDream.lunch = 'pudding';

### JS Functions

1. Write a function to return the area of a rectangle (the product of its length and its width)
<br><br>

var area = function (length, width) {
return length * width;
}
var perimeter = function (length, width) {
return 2 * (length + width);
}
console.log(area + perimeter);

2. Invoke the function with `3` and `4` as arguments and save it to a variable named `result`
<br><br>
<br><br>

var result = function (3, 4) {

}