JavaScript : Logical Operators
- And Operator: & &
- Or Operator: ||
- Not Operator: !
And Operator: & &
The logical AND operator ( & &) returns true if the expression to the both sides of the operator evaluates to true.
Or Operator:
The logical OR operator returns false if the expression to the both sides of the operator evaluates to false.
Not Operator: !
If the expression evaluates to true, the result of the logical NOT operator (!) is false. If the expression evaluates to false, the result is true.
Related Topics
- JavaScript Interview Questions (Part2)
- JavaScript Interview Questions (Part3)
- Is JavaScript a true OOP language?
- Advantages and Disadvantages of JavaScript
- Difference Between JavaScript and ECMAScript?
- What is noscript tag?
- Escaping Special Characters in JavaScript
- What is undefined x 1 in JavaScript?
- Difference between '=', '==' and '===' operators?
- How to reload a page using JavaScript?
- How to write html code dynamically using JavaScript?
- How to add html elements dynamically with JavaScript?
- How to load another html page from javascript?
- What Is The Disadvantages Using InnerHTML In JavaScript?
- What is Browser Object Model
- How to detect the OS on the client machine in JavaScript?
- Difference between window, document, and screen in Javascript?
- Difference between the substr() and substring() in JavaScript?
- How to replace all occurrences of a string in JavaScript?
- How to test a string as a literal and as an object ?
- What is Associative Array? How do we use it?
- What is an anonymous function in JavaScript?
- What is the use of 'bind' method in JavaScript?
- Pure functions Vs. Impure functions in javascript
- Is Javascript a Functional Programming Language?
- What's the Difference Between Class and Prototypal Inheritance?
- Javascript, Pass by Value or Pass by Reference?
- How to prevent modification of an object in Javascript?
- What is 'this' keyword in JavaScript?
- How Does Function Hoisting Work in JavaScript?
- What do mean by NULL in Javascript?
- What does the delete operator do in JavaScript?
- What is the Infinity property used for in Javascript?
- Event bubbling and Event Capturing in JavScript?
- What is "strict mode" and how is it used in JavaScript?
- What is the difference between .call() and .apply()?
- Entire content of a JavaScript source file in a function block?
- What is an immediately-invoked function expression?
- What is escape & unescape String functions in JavaScript?
- What is the instanceof operator in JavaScript?
- What Are RESTful (REpresentational State Transfer)Web Services?
- What is Unobtrusive JavaScript & Why it's Important?
- What Does JavaScript Void(0) Mean?
- What are JavaScript Cookies?
- Difference between Client side JavaScript and Server side JavaScript
- TypeError: document.getelementbyid(...) is null
- Uncaught TypeError: Cannot read property of undefined In JavaScript
- What's the difference between Null and Undefined?