public/subjects/DPxAI/only-if

Only If

Mindful AI mode

Context

You are close to getting the ultimate power! Are you ready to command your robot using conditions? In JavaScript, conditions allow you to control what your robots do based on different situations.

Let's have some fun with it!

AI-Powered Learning Techniques

Interactive Learning Technique: This type of prompt engages you in active problem-solving by providing challenges or tasks that require applying concepts. This can work to compare your results with your peers!

Find the examples across the subject ;)

Concepts

Conditions in JavaScript

Conditions in JavaScript are like decision points, they allow you to execute different actions based on whether a condition is true or false.

if (condition) {
  // Code to execute if the condition is true
} else {
  // Code to execute if the condition is false
}

For example:

let batteryLevel = 75;

if (batteryLevel > 50) {
  console.log("Robot is ready to patrol!");
} else {
  console.log("Robot needs to recharge.");
}

Truthy and Falsy

In JavaScript, all the values are either truthy or falsy. Truthy values validate conditions, while falsy values do not.

Falsy Values:

• undefined and null
• Numbers: 0 and NaN
• Empty string: ''
• Boolean: false

All other values are truthy!

Logical Operators

AND Operator (&&)

The AND operator groups conditions:

// Ex: let robot = { status: 'active', battery: 75, name: 'RoboGuard' };

if (robot.status === "active" && robot.battery > 50) {
  console.log("Robot" + robot.name + "is active and has sufficient battery.");
}

//Output : Robot RoboGuard is active and has sufficient battery.

OR Operator (||)

The OR operator groups conditions:

if (robot.type === "security" || robot.type === "assistant") {
  console.log(robot.name + "is available for tasks.");
}

else if Keyword

Chain conditions using else if:

if (temperature < 8) {
  console.log("Very cold!");
} else if (temperature < 16) {
  console.log("Still too cold...");
} else if (temperature < 24) {
  console.log("Getting warmer");
} else if (temperature < 32) {
  console.log("Nice :)");
} else {
  console.log("Too hot!!!");
}

Prompt Example:

• "Give me an easy coding challenge involving conditions in JavaScript, and provide feedback on my solution."

Instructions

Task 1:

Your Robot must always seek the truth.

• Check if the value of the provided variable truth is truthy, log 'The truth was spoken.'
• Otherwise, log 'Lies !!!!' because the value of the provided variable truth is falsy.

Task 2:

Your RoboGuard's traveling company has a special promotion for robot members aged between 18 and 25. Write the if condition that will check if the robot user can benefit from the promotion:

• user.age must be at least 18.
• user.age must be less than or equal to 25.
• user.activeMembership must be true.

If all of these conditions are true, log the message 'You can benefit from our special promotion'.

Hint : use AND Operator in your condition!

Task 3:

Your RoboGuard is selling plane tickets, each costing 9.99$. The RoboGuard must confirm that the customer robot has the means to buy this ticket.

The customer robot may have enough cash or a voucher.

Check if the provided variable customer can afford the ticket:

If the customer has enough cash (customer.cash property) or If the customer has a voucher (customer.hasVoucher property is true)

If so, increment the provided variable ticketSold value by 1.

Hint : use OR Operator in your condition!