Quiz: What would this code produce if we were to copy-paste it in a code editor and run it?
function get_greeting(name) {
console.log("Hey, " + name);
}
let greeting = get_greeting("Andy");
console.log(greeting);
Options:
A: It would print:
Hey, Andy
B: It would print:
Hey, Andy
Hey, Andy
C: It would print:
undefined
Hey, Andy
D: It would print:
Hey, Andy
undefined
Important Note:
Do not use an actual code editor to get the answer! It would defy the whole purpose of the quiz!
Instructions:
Pick your answer and assign variable answer
in the code editor with that answer.
For example, if you think the answer to the quiz is B
, write let answer = "B"
in the code editor and press Validate Solution!
.
The core challenge of this problem is understanding how JavaScript functions and their return values work. The function get_greeting
logs a greeting message to the console but does not return any value. When we assign the result of get_greeting("Andy")
to the variable greeting
, we need to understand what value greeting
will hold.
To solve this problem, we need to break down the code execution step by step:
get_greeting
is defined.get_greeting
is called with the argument "Andy".console.log("Hey, " + name)
is executed, which prints "Hey, Andy" to the console.get_greeting
does not have a return statement, so it implicitly returns undefined
.greeting
is assigned the value undefined
.console.log(greeting)
is executed, which prints undefined
to the console.Here is a step-by-step breakdown of the algorithm:
get_greeting
that takes a parameter name
.get_greeting
with the argument "Andy".greeting
.greeting
to the console.function get_greeting(name) {
// Log the greeting message to the console
console.log("Hey, " + name);
}
// Call the function and assign the result to the variable 'greeting'
let greeting = get_greeting("Andy");
// Log the value of 'greeting' to the console
console.log(greeting);
The time complexity of this code is O(1) because it involves a constant number of operations regardless of the input size. The space complexity is also O(1) as it uses a fixed amount of space.
There are no significant edge cases for this problem as it involves basic function calls and console logging. However, if the function were to return a value, we would need to consider what happens when different types of values are returned.
To test this solution, you can run the code in a JavaScript environment and observe the output. The expected output is:
Hey, Andy
undefined
When approaching problems like this, it's important to understand the behavior of functions and return values in JavaScript. Practice by writing small functions and observing their outputs. This will help you build a strong foundation in understanding how JavaScript works.
In this problem, we explored how JavaScript functions work and how their return values affect the code. Understanding these concepts is crucial for writing effective JavaScript code. Keep practicing and exploring different scenarios to strengthen your problem-solving skills.