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What is an asynchronous function in JavaScript?

Asynchronous JavaScript: Asynchronous code allows the program to be executed immediately where the synchronous code will block further execution of the remaining code until it finishes the current one. This may not look like a big problem but when you see it in a bigger picture you realize that it may lead to delaying the User Interface.

How do I create a function in JavaScript?

JavaScript Return Value; How to Create a Function in JavaScript. Use the keyword function followed by the name of the function. After the function name, open and close parentheses. After parenthesis, open and close curly braces. Within curly braces, write your lines of code. Syntax: function functionname() { lines of code to be executed } Try ...

How to return multiple arrays from a function in JavaScript?

JavaScript functions can return a single value. To return multiple values from a function, you can pack the return values as elements of an array or as properties of an object. Returning multiple values from a function using an array. Suppose the following getNames() function retrieves the first name and last name from a database in the backend ...

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