Question

State whether each of the following is true or false takes?

a) Comments cause the computer to print the text after the if one that when the script is executed
1. True
2. False
b) JavaScript considers the variables number and Numbper to be identical
1. True
2. False
c) The default case is required in the switch selection statement.
1. True
2. False
d) The expression (x>y&&ay is true or a 1. True
2. False
e) An expression containing the || operator is true if either or both of its operands
1. True
2. False
f) JavaScript is a scripting language used to make the website interactive
1. True
2. False

Answer 1

Comments in JavaScript do not affect the output when a script is executed. JavaScript is case-sensitive and considers 'number' and 'Numbper' as different variables. The default case is optional in a switch statement. An expression with the '||' operator is true if at least one of its operands is true. JavaScript is a scripting language used for interactive websites.

Step-by-step explanation:

a) True. Comments in JavaScript are used to add explanatory text to the code. The computer ignores comments when the script is executed, so they do not affect the output. However, they can provide valuable information for other programmers who read the code.

b) False. JavaScript is case-sensitive, so 'number' and 'Numbper' are considered as different variables.

c) False. The default case is optional in a switch selection statement. If none of the cases match the expression, the code inside the default case will be executed.

d) False. The expression '(x>y&&ay' is not valid or complete. It contains syntax errors. To evaluate the expression, there should be a closing parenthesis after 'ay' and a valid logical operator between '&&'.

e) True. An expression containing the '||' (logical OR) operator is true if at least one of its operands is true.

f) True. JavaScript is a scripting language commonly used to make website interactive. It allows developers to add dynamic elements, manipulate and validate data, and respond to user interactions.

Comments do not cause text to print, variables in JavaScript are case-sensitive, the default case in switch statements is optional, and JavaScript is a language used for interactive websites.

For each of the following, indicate whether the statement is true or false:

1. Comments cause the computer to print the text after them when the script is executed. False. Comments are ignored by the computer and are not executed or printed.
2. JavaScript considers the variables number and Numbper to be identical. False. JavaScript is case-sensitive, so these variables are considered distinct.
3. The default case is required in the switch selection statement. False. The default case is optional in a switch statement.
4. The expression (x > y && a < y) is true if x is greater than y and a is less than y. True.
5. An expression containing the || operator is true if either or both of its operands are true. True.
6. JavaScript is a scripting language used to make the website interactive. True.