1.Difference Between Const,Var,Char. 2.Oop's concept with example 3.JavaScript is async or sync language and explain the reason. 4.How to create a simple object in JavaScript. 5.Find element and Find Elements difference between both? 6.How to manage authentication API.

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Const is used for constant values that cannot be reassigned, var is used for variable declaration, and char is a data type for storing characters in programming languages.
OOPs concepts include inheritance, encapsulation, polymorphism, and abstraction. Example: Inheritance allows a class to inherit properties and methods from another class.
JavaScript is an asynchronous language, meaning it can execute multiple operations at the same time without blocking the main thread. This is useful for handling tasks like API calls.
To create a simple object in JavaScript, you can use object literal notation or the Object constructor function.
Find element is used to locate a single element on a web page, while find elements is used to locate multiple elements.
To manage authentication API, you can use techniques like token-based authentication, OAuth, or JWT for secure communication.

1.Difference Between Const,Var,Char. 2.Oop's concept with example 3.JavaScript is async or sync language and explain the reason. 4.How to create a simple object in JavaScript. 5.Find element and Find Elements difference between both? 6.How to manage authentication API.

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