JavaScript Question 22 (1 point) Assume userName equals “Tom” and userAge equals

Question

JavaScript

Question 22 (1 point)

Assume userName equals “Tom” and userAge equals 22. What is displayed in a dialog box when the following statement is executed?
alert(userAge + " is " + userName + "'s age.");

22 is Tom's age.

22
is Tom's age.

22 is Tom's age.

22
is Tom's age.

uestion 23 (1 point)

Code Example 2-1
1. var myAge, newAge;
2. myAge = prompt("How old are you?");
3. myAge = parseInt(myAge);
4. newAge = 18 - myAge;
5. alert("You will be eligible to vote in " + newAge + " years");

(Refer to Code Example 2-1) What type of data is stored in myAge after line 2 is executed?

string data

integer data

numeric data

it is undefined

Question 24 (1 point)

Code Example 2-1
1. var myAge, newAge;
2. myAge = prompt("How old are you?");
3. myAge = parseInt(myAge);
4. newAge = 18 - myAge;
5. alert("You will be eligible to vote in " + newAge + " years");

(Refer to Code Example 2-1) What would be returned if the user entered “fifteen” at the prompt?

You will be eligible to vote in undefined years

You will be eligible to vote in NaN years

You will be eligible to vote in years

nothing, the program would not run

Question 25 (1 point)

Code Example 2-1
1. var myAge, newAge;
2. myAge = prompt("How old are you?");
3. myAge = parseInt(myAge);
4. newAge = 18 - myAge;
5. alert("You will be eligible to vote in " + newAge + " years");

(Refer to Code Example 2-1) What would be returned if the user entered 14.78 at the prompt?

You will be eligible to vote in 3 years

You will be eligible to vote in 4 years

You will be eligible to vote in 3.22 years

nothing, 14.78 is not an integer

Question 26 (1 point)

To write a string to a document, use

the write() or writeln() method

the prompt() method

the alert() method

all of these can be used

Save

Question 27 (1 point)

Which code would result in the same output as the following?
document.write("Welcome, my friend!<br>Glad you are here.");

document.writeln("<pre>Welcome, my friend!");
document.writeln("Glad you are here.</pre>");

document.writeln("<pre>Welcome, my friend! Glad you are here.</pre>");

document.writeln("Welcome, my friend!");
document.writeln("Glad you are here.");

document.writeln("<pre>Welcome, my friend!<br>Glad you are here.</pre>");

22 is Tom's age.

22
is Tom's age.

22 is Tom's age.

22
is Tom's age.

uestion 23 (1 point)

Code Example 2-1
1. var myAge, newAge;
2. myAge = prompt("How old are you?");
3. myAge = parseInt(myAge);
4. newAge = 18 - myAge;
5. alert("You will be eligible to vote in " + newAge + " years");

(Refer to Code Example 2-1) What type of data is stored in myAge after line 2 is executed?

string data

integer data

numeric data

it is undefined

Explanation / Answer

Question 22: 22 is Tom's age. Question 23: integer data Question 24: You will be eligible to vote in NaN years Question 25: You will be eligible to vote in 4 years Question 26: the write() or writeln() method Question 27: document.writeln("

Welcome, my friend!
Glad you are here.

");

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