Unit 4: Introduction to JavaScript (CodeHS)

Front

Which of the following choices is a properly formed JavaScript variable name, meaning it is both legal in the JavaScript language and considered good style? Num dogs, numDogs, num_dogs, NumDogs

Back

numDogs

Front

You are building a house with a crew and diving nails among 8 workers. Which statement will calculate how many nails will be left over?

Back

Front

What keyword do you need to use to define a variable in JavaScript?

Back

var

Front

What does the following program do?

Back

Draws a rectangle on the canvas that is positioned the width and height of the rectangle from the x- and y-axis.

Front

What is printed on the screen if the user enters '10' when the following program is run?

Back

200

Front

You want to read input from the user to know how many slices of pizza they would like to buy. Which statement should you use to read in a number from the user?

Back

Front

In a graphics canvas, what are the coordinates of the bottom right corner of the window?

Back

getWidth(), getHeight()

Front

What are the coordinates of the center of the window?

Back

getWidth() / 2, getHeight() / 2

Front

A function passed to an event handler that is called every time a certain event happens is called a

Back

callback function

Front

How can we call the function getCoordinate every time the mouse is clicked?

Back