The aim of this puzzle: Use the “and” logical operator && inside the if statement to check if 2 separate conditions are both true.
Walkthrough of the solution: The && logical operator is used to check if 2 separate conditions are true. It returns true only if both conditions are true. For example:
if (day === 'weekday' && holiday === 'no') {
print('You have to go to work today');
}
The if statement checks to see if day is equal to 'weekday' AND if vacation is equal to 'no'. The string 'You have to go to work today' will be printed only if both conditions are true. If 1 or both conditions are false, then the code in the if statement’s code block will not run.
In this puzzle, the weather variable has the value 'rainy', and the temp variable uses pickRandom() to choose between the strings 'warm' and 'cold'.
The 1st if statement uses the “and” operator && to check if weather is equal to 'rainy' AND if temp is equal to 'cold'. If both are true, the message 'Wear a rain jacket' will be printed to the console.
Edit the 2nd if statement to check if weather is equal to 'rainy' AND if temp is equal to 'warm'.
Sample code solution:
(Tap below to reveal)
var weather = 'rainy';
var temp = pickRandom(['warm', 'cold']);
if (weather === 'rainy' && temp === 'cold' ) {
print('Wear a rain jacket');
}
if (weather === 'rainy' && temp === 'warm') {
print('Bring an umbrella');
}
JavaScript Concepts: Logical Operators (&&), Assignments, Calling Functions, Array Expression
Grasshopper Concepts: print(), pickRandom()