JavaScript Operators Quiz: Test Your Knowledge with Flashcards

What are the different types of operators supported in JavaScript?

Which function is used to convert a string to an integer in JavaScript?

What are the control statements in JavaScript?

Which tag is used to display a horizontal ruled line in HTML?

What will be the output of the following code snippet? Enter your age: if(age > 18) { console.log('Allowed to drive'); } else { console.log('Not allowed to drive'); }

Identify the logical operators used in JavaScript.

In JavaScript, what will be the result of this expression? $5 imes 8 + 2$

Which of the following HTML5 tags is used for marking up sidebars or content that is tangentially related to the main content?

What does the '||' operator represent in JavaScript?

If a variable in JavaScript is declared but not assigned a value, what is its default value?

What is the purpose of the 'toUpperCase()' function in JavaScript?

Which data type in JavaScript represents only two values, 'true' and 'false'?

What value does JavaScript return when you perform the division operation 3/0?

What does 'null' represent in JavaScript?

What happens when a variable is declared but not assigned any value in JavaScript?

When does JavaScript return 'undefined' for a variable?

Which value is returned when an arithmetic operation results in dividing a number by 0?

JavaScript Basics

JavaScript supports different data types: number, string, boolean, infinity, null, and undefined
Number data type stores both whole numbers (integer) and decimal point numbers (floating point numbers)
String data type stores text and must be inside double or single quotes
Boolean data type represents only two values: true and false
Infinity is a special value obtained by dividing a number by 0
Null is a value that means "nothing", "empty", or "unknown"
Undefined is returned when a variable is declared but not assigned a value

Variable Declaration

Variables can be declared using the var keyword
Multiple variables can be declared in a single statement, separated by commas
Variables can be declared with initialization

Operators

JavaScript supports various operators, including:
- Arithmetic operators: +, -, *, /, %
- Relational operators: ==, !=, >, <, >=, <=
- Logical operators: &&, ||, !
- Conditional operators: if, if...else

Control Statements

JavaScript supports control statements, including:
- if statements
- if...else statements

Functions

JavaScript supports built-in functions, such as:
- parseInt()
- parseFloat()
- prompt()
- confirm()
- alert()
JavaScript also supports user-defined functions

HTML5

HTML5 includes new semantic tags, such as:
- ``
- ``
- ``
- ``
- ``
HTML5 is suitable for creating modern web applications with semantic meaning

Exercises

Answer the following questions:
- What is the data entry operator used for?
- What are physical tags?
- What are paired tags and empty tags?
- Identify the logical operators in JavaScript
Complete the program to display the multiplication of 6.40 and 300
State at least three attributes of a series
Find the error in the given JavaScript code

Test your knowledge of JavaScript operators and functions with this quiz. Questions cover topics like logical operators, assignment operators, and function declarations.