Javascript · Conditional Statements
Challenge
The full text of this chapter, to read or revisit. To practise, do the exercises.
▶ Do the exercises
Exercise 1 — Battle Damage Calculator
Pyrochu attacks! Compute the real damage based on the opponent's type: 1. Against
"plant"
: damage is doubled (super effective!) 2. Against
"water"
: damage is divided by 2 (not very effective...) 3. Against
"fire"
: damage is 0 (immune!) 4. Any other type: normal damage Store the result in
finalDamage
and print it.
Starter code
let opponentType = "plant"; let baseDamage = 30; let finalDamage; // Write your conditions here console.log("Damage dealt: " + finalDamage);
Exercise 2 — The Potion Shop
You enter the potion shop with your coins. 1. Use a ternary to set
price
: 80 if
potionSize
is
"large"
, otherwise 30 2. With an
if
/
else
, check if
coins
is enough to pay
price
: - if yes, print
"Purchase successful!"
and the remaining coins - if no, print
"Not enough coins..."
and how many are missing
Starter code
let potionSize = "large"; let coins = 65; // 1. Ternary for the price let price = // 2. Can you afford it?
Exercise 3 — The Arena Master
Final boss! Combine everything: 1. With a
switch
on
chosenCodemon
, set
attackPower
: -
"pyrochu"
: 45 -
"aquachu"
: 40 -
"zap"
: 50 - any other: 25 2. Then with an
if
/
else if
/
else
, print the verdict: -
attackPower
50 or more:
"Crushing victory!"
- 40 or more:
"Close victory!"
- below 40:
"Defeat..."
Starter code
let chosenCodemon = "zap"; let attackPower; // 1. switch to set attackPower // 2. if/else if/else for the verdict
← Previous lesson : QuizzNext lesson : The for Loop →
Back to the course