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    JavaScript test

    JavaScript is a high-level programming language that is commonly used for creating dynamic and interactive websites. It was first created by Brendan Eich at Netscape Communications in 1995 and has since become one of the most widely used programming languages on the web.

    JavaScript is often used for creating client-side applications that run in a web browser, but it can also be used for server-side programming with the help of Node.js. It is a versatile language that can be used for a wide range of purposes, from creating animations and interactive user interfaces to building complex web applications.

    Some of the key features of JavaScript include its ability to manipulate the Document Object Model (DOM), which is the structure of a web page, and its support for asynchronous programming, which allows developers to create applications that can run multiple tasks simultaneously without blocking the user interface.

    JavaScript is a dynamically typed language, which means that variables can hold values of any type, and its syntax is similar to that of other C-style programming languages such as C++, Java, and C#. It also has a large and active developer community, which has created many libraries and frameworks to simplify common tasks and extend its capabilities.

    Overall, JavaScript is a powerful and flexible programming language that is essential for modern web development.

    #JavaScript
    #JavaScript_test
    #HTML
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    #JS
    #programming_language
    #front-end
    #developement
    #javascript_exam
    Questions count: 23

    Example of the test

    What is a callback function in JavaScript?

    What is a callback function in JavaScript?

    A function that is executed after a set interval of time A function that is executed when a certain event occurs A function that is passed as an argument to another function A function that is used to handle errors in asynchronous cod
    Which operator is used to compare the value and type of two values?

    Which operator is used to compare the value and type of two values?

    == === <= >=
    How do you access property in object

    How do you access the value of a property in a JavaScript object? (you can choose more than one option)

    Using the dot notation (object.property Using the bracket notation (object["property"]) Using the parenthesis notation (object(property)) Using the arrow notation (object->property)
    What is a JavaScript function?

    What is a JavaScript function?

    A block of code that performs a specific task A data type that stores text and numbers A type of loop that repeats a set of instructions A data structure that stores key-value pairs
    What is the purpose of the Fetch API in JavaScript?

    What is the purpose of the Fetch API in JavaScript?

    To retrieve data from a server using HTTP requests To simplify JavaScript code and provide cross-browser compatibility To provide a framework for building user interfaces To provide a set of tools for building web applications

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