Deck 11: Javascript: Objects

Question 1

What does the variable string contain after the following code is executed
Var string = "Good luck on the test";
String = string.split( " " );

A) an array containing the strings "Good", "luck", "on", "the" and "test"
B) the string "Good.luck.on.the.test"
C) the string "Good,luck,on,the,test"
D) Nothing, the string conversion will generate an error.

Answer 1

A

Question 2

What does the variable string contain after the following code is executed
Var string = "Good luck on the test";
String = string.charAt( 3 );

A) Goo
B) 3
C) d
D) Nothing, the string conversion generates an error.

Answer 2

C

Question 3

________ are stored by the browser on the user's computer to maintain client-specific information during and between browser sessions.

A) Files
B) Documents
C) Cookies
D) Substrings

Answer 3

C

Question 4

Which of the following methods would you use to convert a list of Unicode values into a string containing the corresponding characters

A) charAt
B) charCodeAt
C) fromCharCode
D) UCodeToChar

Question 5

What does the variable string contain after the following code is executed
Var string = "Good luck on the test";
String = string.link("www.deitel.com");

A) a link to www.deitel.com with the text "www.deitel.com"
B) a link to www.deitel.com with the text "Good luck on the test"
C) the text "www.deitel.com"
D) Nothing, the string conversion will generate an error.

Question 6

A JSON object is represented as a list contained in _____.

A) curly braces
B) square brackets
C) single quotes
D) double quotes

Question 7

Which of the following is not a method

A) getTime()
B) strike()
C) getMonth()
D) valueOf()

Question 8

What is the value of s3 after the following code is executed
Var s1 = "one";
Var s2 = "two";
Var s3 = "three";
S1)concat( s2 );
S3 = s1;

A) one
B) onetwo
C) three
D) onetwothree

Question 9

Which of the following is a mathematical constant

A) sqrt( x )
B) cos( x )
C) floor( x )
D) Math.LN10

Question 10

Which of the following is not a method or property of the JavaScript Number object

A) toString
B) toFloat
C) valueOf
D) MAX_VALUE

Question 11

Which of the following methods would you use to search a string for a specific character

A) substring
B) charAt
C) substr
D) indexOf

Question 12

An object's methods are accessed by writing the name of the object immediately followed by a ________.

A) method name
B) method index
C) dot
D) property operator

Question 13

What is the value of s1 after the following code is executed
Var s1 = "deitel and associates";
S1 = s1.slice( 6 );

A) deitel
B) deitel and asso
C) and associates
D) deitel and associates

Question 14

Which of the following is not a method of the JavaScript Boolean object

A) toString
B) valueOf
C) toInt
D) The JavaScript Boolean object does not possess publicly accessible methods.

Question 15

To find out when a document was last modified, use the document object's _____ property.

A) lastModified
B) lastChanged
C) modDate
D) dateChanged

Question 16

What will variable value contain after the following code is executed
Var value = new Date();
Value = value.valueOf();

A) the current date in the format hh:mm:ss calculated from the number of milliseconds between midnight January 1, 1970 and the current date
B) a large integer representing the number of milliseconds between midnight January 1, 1970 and the current date
C) the current date in the format hh:mm calculated from the number of milliseconds between midnight January 1, 1970 and the current date
D) a large floating point number representing the number of milliseconds between midnight January 1, 1970 and the current date