Question 1

Which script block will display Hello World in the browser when the script is run? A) B) document.write(message & message2); C) var message = Hello ; var message2 = World ; D) document.write("message + message2 ");

Accepted Answer

The script in option A correctly uses JavaScript to concatenate two strings and display "Hello World" using `document.write()`.

Question 2

Consider the following code:  What is the expected result when you run this script in the browser?
A) A window alert box will display Hello.
B) A window alert box will display Goodbye.
C) No window alert box will appear because there is an error in the code.
D) A window alert box will display Hello then a second alert box will display Goodbye.

Accepted Answer

A

Question 3

Consider the following code:  What is the appropriate parameter for the alert() method in line 5 to reference the text in the firstName text box?
A) document.myForm.value(firstName)
B) document.myForm.firstName.value
C) window.myForm.firstName.value
D) window.myForm.text(firstName)

Accepted Answer

B

Question 4

Which statement is true about the getElementByID() method?
A) It returns only the first element with the specified ID.
B) It returns an array containing all elements with the specified ID.
C) If a match is not found for the specified ID, it will attempt searching by name.
D) If a match is not found for the specified ID, it will attempt searching by tag name.

Accepted Answer

The getElementByID() method returns only the first element with the specified ID, as IDs are meant to be unique within a document.

Question 5

Which choice best defines events and event handlers?
A) An event can be an action initiated by the user, and an event handler specifies how JavaScript will react to the action.
B) An event is an action initiated by the operating system, and an event handler is a function defined by the user.
C) An event handler can be an action initiated by the user, and an event specifies how JavaScript will react to the action.
D) An event is initiated by an error in JavaScript, and an event handler will attempt to bypass the error and continue.

Accepted Answer

An event is an action or occurrence recognized by software, often initiated by the user, and an event handler is a function or method that contains the code to be executed in response to the event.

Question 6

Suppose you define two variables as follows: var x = 5; var y = "5"; Which statement will return the mathematical sum of these variables?
A) alert(x + int(y));
B) alert(x + parseInt(y));
C) alert(x + y);
D) alert((int)x + (int)y);

Accepted Answer

The parseInt() function converts the string "5" to the integer 5, allowing for the mathematical sum of x and y.

Question 7

Consider the following code:  What is the expected result of this script?
A) When you leave the page, the alert box will display.
B) The page will ignore the function, so a blank page will display on entry and exit.
C) When you enter the page, you will be warned that there is unfinished JavaScript to run.
D) When you leave the page, there will be a JavaScript error because you cannot unload an alert box.

Accepted Answer

The answer of Consider the following code:  What is...

Question 8

Which statement about the JavaScript form object is true? A) The JavaScript form object has no relationship to the X/HTML tags are present in the X/HTML document.

Accepted Answer

The JavaScript form object is directly related to the HTML <form> element and is available when these tags are present in the document, allowing interaction with the form and its elements.

Question 9

Consider the following code:  Will this function generate an error?
A) No, because the code is well-formed
B) Yes, because the alert syntax is incorrect
C) Yes, because there are no valid variables returned
D) Yes, because the passed arguments have not been defined before the function call

Accepted Answer

The answer of Consider the following code:  Will this...

Question 10

Consider the following message displayed in a pop-up window: Welcome to the CIW Web site! Which line of code will deliver the pop-up window that displays this message? A) CIW Web site B) CIW Web site C) D)

Accepted Answer

The correct syntax for an onclick event in HTML is to use onclick="alert('message')". Option B correctly uses this syntax to display the pop-up message.

Question 11

What is the purpose of the prototype property in JavaScript?
A) It is used to add properties or methods to a JavaScript object.
B) It returns a list of properties and methods of a JavaScript object.
C) It enables developers to create JavaScript code from a specially formatted prototype flowchart document.
D) It is used to create usage examples of custom objects because its output is not evaluated by the JavaScript interpreter.

Accepted Answer

The prototype property in JavaScript is used to add properties or methods to a constructor function, which are then shared across all instances of objects created from that constructor.

Question 12

Which of the following comparison statements will return true?
A) x = 10; y = 5; x <= y;
B) x !== "X"
C) x === y;
D) x == y;

Accepted Answer

The statement x !== "X" will return true because it checks if x is not strictly equal to the string "X", which is true since x is a number.

Question 13

Consider the following code:  Which statement could be used to determine the value of the first radio button?
A) document.rdoGroup1.value
B) document.myForm.rdoGroup1[0].value
C) document.getElementById(rdoGroup1).value
D) document.getElementById("rdoGroup1").value

Accepted Answer

The answer of Consider the following code:  Which statement...

Question 14

Consider the following code:  When an invalid e-mail address is entered, an alert is displayed to the user, but the form submission is not interrupted. What changes need to be made to the script in order to abort the submission if an invalid e-mail address is entered?
A) Add return false after the alert() statement.
B) Change return to validate in the function call.
C) Add validate false after the alert() statement.
D) Remove the return keyword from the function call and put it in front of the alert() statement.

Accepted Answer

The answer of Consider the following code:  When an...

Question 15

Which of the following is a browser security issue that JavaScript developers should remember when developing a script?
A) JavaScript cannot be disabled in the client and will always run.
B) JavaScript functionality is immune to viruses, trojans and malware.
C) JavaScript is a cross-platform scripting language and will generate consistent results regardless of the client or server being used.
D) Certain JavaScript functionality may be blocked by some browsers, which prevents the script from running as expected for all users.

Accepted Answer

Certain JavaScript functionality may be blocked by some browsers, which can prevent scripts from running as expected for all users. This is a security issue developers need to consider.

Question 16

Which statement will open this Web document in a new browser window?
A) document.open(http://www.CIWcertified.com);
B) window.open(http://www.CIWcertified.com);
C) window.open("http://www.CIWcertified.com");
D) document.open("http://www.CIWcertified.com");

Accepted Answer

window.open() method opens a new browser window or tab.

Question 17

Which of the following is a practice associated with the security risk known as cross-site scripting (XSS)?
A) Inserting JavaScript code in a URL query string to perform an unintended or malicious action
B) Using a look-alike site to impersonate a trusted site so the user will enter sensitive information
C) Using a certificate authority validation to persuade users to accept a specialized script that can override certain security restrictions in the browser
D) Launching a JavaScript statement that has no conditions for ending, thus requiring the user to close the browser in order to end the script

Accepted Answer

Cross-site scripting (XSS) involves injecting malicious scripts, often JavaScript, into web pages viewed by other users, such as through a URL query string.

Question 18

Consider the following statement: for (X; Y; Z) What does Z represent in this code?
A) The counter variable
B) The loop counter update expression
C) The condition under which the loop will execute
D) The highest value that the counter variable may reach

Accepted Answer

The answer of Consider the following statement: for (X; Y;...

Question 19

Consider the following code:    What output will appear in the browser when you run this script?
A) "1, 2, 3, 4, 5, 6, 7, 8, 9"
B) 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
C) 1, 2, 3, 4, 5, 6, 7, 8, 9,
D) "1, 2, 3, 4, 5, 6, 7, 8, 9, 10"

Accepted Answer

The answer of Consider the following code:    What output...

Question 20

Consider the following code:  What is the output when you run this script in the browser?
A) An alert box displaying the following: John, Paul, George, Ringo
B) An alert box displaying the following: Ringo, John, Paul, George
C) An alert box displaying the following: Ringo, Paul, George
D) An alert box displaying the following: John, Ringo, George

Accepted Answer

The answer of Consider the following code:  What is...

Exam 10: CIW JavaScript Specialist

Which script block will display Hello World in the browser when the script is run?

Consider the following code: What is the expected result when you run this script in the browser?

Consider the following code: What is the appropriate parameter for the alert() method in line 5 to reference the text in the firstName text box?

Which statement is true about the getElementByID() method?

Which choice best defines events and event handlers?

Suppose you define two variables as follows: var x = 5; var y = "5"; Which statement will return the mathematical sum of these variables?

Consider the following code: What is the expected result of this script?

Which statement about the JavaScript form object is true?

Consider the following code: Will this function generate an error?

Consider the following message displayed in a pop-up window: Welcome to the CIW Web site! Which line of code will deliver the pop-up window that displays this message?

What is the purpose of the prototype property in JavaScript?

Which of the following comparison statements will return true?

Consider the following code: Which statement could be used to determine the value of the first radio button?

Consider the following code: When an invalid e-mail address is entered, an alert is displayed to the user, but the form submission is not interrupted. What changes need to be made to the script in order to abort the submission if an invalid e-mail address is entered?

Which of the following is a browser security issue that JavaScript developers should remember when developing a script?

Which statement will open this Web document in a new browser window?

Which of the following is a practice associated with the security risk known as cross-site scripting (XSS) ?

Consider the following statement: for (X; Y; Z) What does Z represent in this code?

Consider the following code: What output will appear in the browser when you run this script?

Consider the following code: What is the output when you run this script in the browser?