How to use setInterval function call in JavaScript?

The setInterval() method in JavaScript evaluates an expression at intervals. It is used to perform the repetitive tasks or operations that need to be performed in a…

What are the latest operators added to JavaScript?

The latest operators added to JavaScript are spread operator and rest. Rest operator With rest parameter, you can represent number of arguments as an array. ES6 brought…

What is the use of return statement inside a function in JavaScript?

The “return” statement in JavaScript mentions a value, which you like to return. Inside a function, the value is returned to the function caller. Example You can…

Should I write my script in the body or the head of the HTML?

In HTML, the script tag can be inserted either in head section or in body section, generally the java script code is inserted between script open and…

How to define functions inside a function body in JavaScript?

To achieve what you want, use JavaScript Closures. A closure is a function, which uses the scope in which it was declared when invoked. It is not…

Are there constants in JavaScript?

Yes, Constants exist in JavaScript. We use the keyword const for constants. The value of const remains the same; you cannot change and declare it again. Create…

What are increment (++) and decrement (–) operator in JavaScript?

Increment The increment operator increases an integer value by one. Here’s an example where the value of a is incremented twice using the increment operator twice Example…

How to generate random whole numbers in JavaScript in a specific range?

JavaScript has many built-in methods for working with numbers and performing mathematical calculations. One of those methods is the Math.random() method. To generate a random number, use the JavaScript…

What is NaN in JavaScript?

NaN is nothing more than a property of the global object which stands for Not a Number. It is mainly used to check whether the entered value is…

What does “javascript:void(0)” mean?

In English, void means nothing. In a programming language, void means return nothing. “javascript: void(0)” is similar to void. javascript: void(0) means return undefined as a primitive…