Jeffrey-Fazal / js-conditionals

Comparison Operators, Logical Operators, & Conditionals

Getting Started

1. Fork this repo and git clone it down to your computer.
2. Create two files index.html and script.js.
3. Include script.js in index.html using a <script> tag.
4. Open index.html in your web browser and open the console.
5. After answering each section below, git commit your work.
6. When you're finished or when time is up, push your work to your remote repo, and file a Pull Request.

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Booleans & Comparison Operators

You don't need to do this section in your script.js file. Just write your answers directly in the markdown tables below.

Here's an example truth table for the ! (not) operation. In it, we're listing the values of !a that correspond with a given value of a.

a	!a
true	false
false	true

Fill out the truth tables below for && (AND), || (OR) and one that uses multiple comparison operators. All you need to do is replace the ?'s with either true or false.

NOTE: Because of markdown formatting, || and && have been replaced with OR and AND respectively.

HINT: With the last one, it may be helpful to add additional columns to the table for each individual comparison.

a	b	a AND b
true	true	true
true	false	false
false	true	false
false	false	true

a	b	a OR b
true	true	true
true	false	true
false	true	true
false	false	true

a	b	a != b
3	3	true
1	5	true
2	"2"	true

a	b	!a AND (a OR b)
true	true	false
true	false	true
false	true	false
false	false	true

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Exam Marks

Create a variable called studentScore and assign it a number between 0 and 100. Write a conditional that matches the following conditions:

• If a student scores 80 or more, tell them they've got an A.
• If they score 70 or more, tell them they've got a B.
• If they score 60 or more, tell them they've got a C.
• If they score 50 or more, tell them they've got a D.
• If they score below 50, tell them they have to re-take the exam.

Pizza/Pasta

1. Use the prompt() function to record what a user would like to eat in a variable
2. Check if they like pizza, and if they do then output "yay pizza!!"
3. Otherwise check if they like pasta, and if they do then output "ooh I love pasta!!"
4. If they don't like either one, then output "brussel sprouts for you!"

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Bouncer 1

You're a bouncer at a bar. Create an age variable and a conditional that satisfies the following requirements...

• If a patron is older than 21, output "Come on in!".
• If a patron is between 18 and 21, output "Come on in (but no drinking)!".
• If a patron is younger than 18, output "You're too young to be in here!".
• If a patron is older than 75, output "Are you sure you want to be here?".

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Bouncer 2

Bar patrons must have an ID if the bouncer is even going to consider what age they are.

• If the patron has an ID, the bouncer will then check if they are of the proper age
• If the patron does not have an ID, the bouncer will tell them "No ID, no entry."

Hint: Whether the patron has an ID or not can be stored in a hasId variable. What do you think the stored data type should be?

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Valentine's Day Flowchart

• Implement the flowchart below in code.

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Letter to Santa Flowchart

• Implement the flowchart below in code.
• For each node in the flowchart that isn't a question, output the text to the console. i.e.

  console.log('Write your wishlist and letter to Santa.')
  console.log('Address your envelope with "1 Candy Cane Lane, North Pole".')