JavaScript Simplified - Chapter 48 Exercises

The variables in a function definition that receive the data passed to them by the calling code are called _________.

parameters

The rules for naming parameters are the same as the rules for naming ______.

variables

Code a call to the function displayAlert() that passes the argument "Hello world"

displayAlert("Hello world");

displayAlert$•Helloworld•$;

Code the first line of a function named concat(). It has 3 parameters—the first three letters of the alphabet—all strings.

function concat("a", "b", "c") {

functionconcat$•a•,•b•,•c•${

Code a function call that has a variable, a string, and a number as arguments. Make up the name of the function and the arguments.

makeAddress(city, "Texas", 24);

[a-z_$][a-zA-Z0-9_$]*$[a-z_$][a-zA-Z0-9_$]*,•.*,[-]?(?:[.]\d+|\d+(?:[.]\d*)?)$;

Code the first line of a function that has 2 parameters. Make up the name of the function and the parameters.

function combineNames(firstName, lastName) {

function[a-z_$][a-zA-Z0-9_$]*$[a-z_$][a-zA-Z0-9_$]*,[a-z_$][a-zA-Z0-9_$]*${

Code a function that has 2 parameters. Concatenate them and assign the result to a variable that hasn't been declared beforehand. Make up all the names.

function concat(string1, string2) {
let combo = string1 + string2;
}

function[a-z_$][a-zA-Z0-9_$]*$([a-z_$][a-zA-Z0-9_$]*),([a-z_$][a-zA-Z0-9_$]*)${[\r\n]letcombo=\1\+\2;[\r\n]}

Code a function that has three number parameters. Multiply them. Assign them to a variable that hasn't been declared beforehand. Make up all the names.

function mult(a, b, c) {
let num = a * b * c;
}

function[a-z_$][a-zA-Z0-9_$]*$([a-z_$][a-zA-Z0-9_$]*),([a-z_$][a-zA-Z0-9_$]*),([a-z_$][a-zA-Z0-9_$]*)${[\r\n]let[a-z_$][a-zA-Z0-9_$]*=\1\*\2\*\3;[\r\n]}

I've coded a call to a function that displays an alert. Leave my code intact.
Code the function.
Click the Result button (or, after revising, don't click, just wait).
Wait a moment.
If you've coded correctly, the alert will display.
Dismiss the alert by clicking OK.
For help with this code, see Chapter 48 in the book.

Code a function with 2 number parameters.
The function sums the two parameters and assigns the sum to a variable.
The function displays an alert concatenating "The sum is " with the variable.
Call the function
Click the Result button (or, after revising, don't click, just wait).
Wait a moment.
If you've coded correctly, an alert will display the message.
Dismiss the alert by clicking OK.
For help with this code, see Chapter 48 in the book.

JavaScript Simplified / Chapter 48 Exercises

Congratulations. You've aced all the exercises for this chapter.

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