JavaScript Functions Worksheet

Question 1

What is a function, and why would you ever want to use one in your code?

fuctions are statements that proform taskes or calcutations
Question 2

What do you call the values that get passed into a function?

peramiters
Question 3

Do all functions return a value? (Note: this is a bit of a trick question - make sure to ask me about this in class.)

not exactly because when you are declaring a funtion it dose not output a value
Question 4

What is the 'body' of a function, and what are the characters that enclose the body of a function?

the body tells it what to do and they are idicated with {}
Question 5

What does it mean to 'call', or 'invoke' a function (note that 'calling' and 'invoking' a function mean the same thing)?

its when you make it output the value of the funtion
Question 6

If a function has more than one parameter, what character do you use to separate those parameters?

a comma ","
Question 7

What is the problem with this code (explain the syntax error)?


function convertKilometersToMiles(km)
    return km * 0.6217;
}
                

there is noo begining braket.
Question 8

In the code below, there are two functions being invoked. Which one returns a value? Explain why you know this.


const name = prompt("Enter your name");
alert("Hello " + name + "!");
                

the alert function is invoking it.

Coding Problems

Coding Problems - See the 'script' tag below this h3 tag. You will have to write some JavaScript code in it.

Always test your work! Check the console log to make sure there are no errors.