What does the following JavaScript code snippet do when the code is loaded in a browser?

Displays the text "My JavaScript Button" and a button labeled "Click me!"

There are 2 steps to using functions in JavaScript. What are they?

1) Define the function. 2) Call it.

What do we use control structures for in JavaScript?

Control the flow of the program; how the commands execute.

What does this JavaScript code do?

It makes a new variable called number, and stores 12 inside it

What is the correct way to write a JavaScript array?

var colors = ["red", "green", "blue"]

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JavaScript Basics Quiz

24 termsStudBud Administration13 plays

Test your knowledge on fundamental concepts of JavaScript with this engaging quiz. From variables to functions, challenge yourself with questions on the basics of JavaScript programming.

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Questions 24

Answers

1
A store has 20 apples in inventory.How can you store this information in a JavaScript variable?
var numApples == 20;
var numApples = 20;
var num apples = 20;
20 = numApples;
2
What does the following JavaScript code snippet do when the code is loaded in a browser?
Displays a pop-up window with the message "You are coding with JavaScript!"
Nothing, this code will not load in a browser
Displays the text "My JavaScript Button" and a button labeled "Click me!"
Displays a button labeled "Click me!"
3
Write the javascript code?
hero.moveRight(1)
hero.moveLeft( )
hero.MoveLeft( )
hero.moveUp(1)
4
How can you add a comment in a JavaScript?

'This is a comment
**This is a comment
//This is a comment
5
Javascript code is ...
Compiled
Assembled
Interpreted
Illuminated
6
What is the output of the following JavaScript code segment?
Jose88
error on name+score: type mismatch
Jose 88
Jose+88
7
What symbol do you use to do division in JavaScript?
/
÷
*
//
8
Which is javascript code?
p{color:blue;}
alert("hi");
<input type="button" value="Click me"/>
<body>
9
Select the JavaScript code below
<script> function change_myselect(sel)</script>
ul {list-style-type: none;}
<link rel="stylesheet" href="/
<a href="https://www.w3schools.com/">Visit W3Schools.com!</a>
10
JavaScript code is case sensitive.
False
True
11
What does an if/else statement look like in JavaScript?
A
D
C
B
12
There are 2 steps to using functions in JavaScript. What are they?
1) Define the function. 2) Save it.
1) Call the function. 2) Call it.
1) Define the function. 2) Call it.
1) Name the function. 2) Save it.
13
What keyword do you need to use to define a variable in JavaScript?
int
var
x
variable
14
JavaScript html Tag is typically defined using the _____ tag.
<java> </java>
<jsscript> </jscript>
<jQuery> </jQuery>
<script> </script>
15
What will the following JavaScript code output?
undefined
John is 25 years old.
John25 years old
John is age years old.
16
What do we use control structures for in JavaScript?
Teach Karel new commands
Control the flow of the program; how the commands execute.
Store information for later
Start our JavaScript program
17
Every line of Javascript code must end with a...
full-stop .
colon :
semi-colon ;
comma ,
18
What does this JavaScript code do?
It makes a new variable called number, and stores 12 inside it
It logs the number 12 to the console
It checks to see if number is equal to 12
It makes 12 into a number
19
Which is the correct way to declare a variable in Javascript?
var item = 'milk';
item = 'milk'
variable = "item";
milk = var item;
20
What is the correct way to write a JavaScript array?
var colors = ["red", "green", "blue"]
var colors = "red", "green", "blue"
var colors = (1:"red", 2:"green", 3:"blue")
var colors = 1 = ("red"), 2 = ("green"), 3 = ("blue")
21
What is the proper operator for “not equals” in JavaScript?
!=
≠
*=
=!
22
What does JavaScript add to webpages?
Text and content
Images
Style Sheets
Interactivity
23
How do you create a function in JavaScript?
function -> myFunction()
function myFunction()
function = myFunction()
function:myFunction()
24
What is the word for a popup message in JavaScript?
apop
alert
document.writeln
popup

JavaScript Basics Quiz Flashcards | StudBud