Question 1

Statement labels are used to identify statements in JavaScript code so that the statements can be referenced elsewhere in a program.

Accepted Answer

Statement labels are used in JavaScript code to give a statement a name that can be referenced elsewhere in the program.

Question 2

When each entry in an array matches the entry in another array,it is called a linear array.

Accepted Answer

A linear array is an array in which each entry is a constant multiple of the preceding entry. Matching entries in two arrays would not necessarily make them linear.

Question 3

In an array literal,the array values are a space-separated list within a set of curly brackets.

Accepted Answer

In an array literal, the array values are comma-separated and enclosed within square brackets, not curly brackets or separated by spaces.

Question 4

Index values start with 1 so that the initial item in an array has an index value of 1,the second item has an index value of 2,and so on.

Accepted Answer

In programming, index values typically start with 0, so the initial item in an array or list has an index value of 0, the second item has an index value of 1, and so on.

Question 5

The break statement runs a command or a command block only if the conditional expression returns the value true; it does nothing if the condition is false.

Accepted Answer

The statement mentioned in the question is incorrect. The break statement is used to exit loop statements like for, while or do-while when a certain condition is met. It is not used to run a command block based on a conditional expression.

Question 6

The do/while loop is generally used when the program loop should run at least once before testing for the stopping condition.

Accepted Answer

This is because the do/while loop executes the code block at least once before checking for the stopping condition.

Question 7

A calendar that is created as a web table can have class and ID designations to make it easy for page developers to assign different styles to different parts of the calendar.

Accepted Answer

By giving class and ID designations to different parts of the calendar, developers can easily apply different styles to them using CSS.

Question 8

In an if loop,a variable known as a counter variable is used to track the number of times a block of commands is run.

Accepted Answer

An "if loop" does not exist; "if" is a conditional statement, not a loop. Loops, such as "for" or "while" loops, use a counter variable to track iterations.

Question 9

Increasing the value of the length property adds more items to an array,but the items have null values until they are defined.

Accepted Answer

When the length of an array is increased, it adds more items to the array with undefined values. They are not null but undefined, and they will be assigned a value when defined explicitly.

Question 10

JavaScript supports logical operators that connect several expressions.

Accepted Answer

JavaScript supports logical operators such as AND (&&), OR (||), and NOT (!) that can be used to connect several expressions to form a single logical expression.

Question 11

The appearance of any form element can be changed by modifying style sheets instead of the JavaScript code.

Accepted Answer

It is possible to modify the appearance of form elements using CSS, which is a styling language, instead of using JavaScript.

Question 12

The every(callback [,thisArg])array method applies the callback function to each item in an array.

Accepted Answer

The every method tests whether all elements in the array pass the test implemented by the provided function. It does not apply a callback function to each item but checks each item against a condition.

Question 13

The value of the length property can be reduced without removing items from an array.

Accepted Answer

Reducing the value of the length property of an array will remove items from the end of the array, making the array shorter.

Question 14

By default,items are placed in an array either in the order in which they are defined or explicitly by index number.

Accepted Answer

By default, items are placed in an array in the order in which they are defined, or explicitly by index number.

Question 15

The getDate()method in a calendar app returns an integer ranging from 0 (Sunday)to 6 (Saturday).

Accepted Answer

The getDate() method in JavaScript actually returns the day of the month (1-31) for the specified date, not the day of the week. The getDay() method is used to get the day of the week (0-6, where 0 represents Sunday).

Question 16

When a pass statement is encountered,control is passed to the statement immediately following it.

Accepted Answer

The answer of When a pass statement is encountered,control is...

Question 17

A command block is indicated by its opening and closing square brackets [ ].

Accepted Answer

A command block in programming is not indicated by square brackets [ ]; instead, square brackets are typically used for arrays or list indexing. Command blocks are often denoted by curly braces { }.

Question 18

The map(callback [,thisArg])method returns the index of the first element in the array that passes a test in the callback function.

Accepted Answer

The map() method does not return the index of the first element that passes a test in the callback function. It returns a new array with the results of calling the provided function on every element in the array. The findIndex() method can be used to return the index of the first element that passes a test in the callback function.

Question 19

The slice()method reverses the order of items in an array,making the last items first and the first items last.

Accepted Answer

The slice() method does not reverse the order of items in an array, it returns a new array with selected elements from the original array. The reverse() method, on the other hand, reverses the order of items in an array.

Question 20

The while statement is used to exit a program loop before the stopping condition is met.

Accepted Answer

The while statement is used to continue a loop as long as its condition remains true, not to exit it before the stopping condition is met. Exiting a loop prematurely would typically involve a break statement or altering the condition in a way that makes it false.

Quiz 10: Exploring Arrays, loops, and Conditional Statements