Skip to main content

best javascript intrview quections in agn hub computer classes by near me

 



  • What is the purpose of the map() function in JavaScript?

    • The map() function is used to iterate over an array and apply a transformation or computation on each element, returning a new array with the transformed elements​ (Built In)​.

  • What is the difference between splice() and slice()?

    • splice() modifies an array by adding, removing, or replacing elements, while slice() creates a new array containing a portion of the original array without modifying it​ (Built In)​.

  • How do you remove duplicates from an array in JavaScript?

    • You can use the Set object or the filter() method along with indexOf() to remove duplicates from an array​ (Built In)​.

  • What are closures in JavaScript?

    • Closures are functions that have access to variables from another function’s scope. This happens due to the function being defined within the other function, allowing access to its local variables​ (Built In)​.

  • Explain the difference between == and ===.

    • == checks for equality of value, performing type conversion if necessary, while === checks for both value and type without performing any type conversion​ (Guru99)​.

  • How can you check if an array includes a certain value in JavaScript?

    • The includes() method can be used to check if an array contains a specific value, returning true if it does and false otherwise​ (Built In)​.

  • What is the difference between var, let, and const?

    • var has function scope and can be re-declared and updated. let has block scope and can be updated but not re-declared. const also has block scope but cannot be updated or re-declared​ (zety)​.

  • How do you handle asynchronous code in JavaScript?

    • Asynchronous code in JavaScript can be handled using callbacks, Promises, and async/await syntax​ (Guru99)​.

  • What is the purpose of the reduce() function in JavaScript?

    • The reduce() function reduces an array to a single value by applying a function to each element and accumulating the result​ (Built In)​.

  • What is the fetch() function used for in JavaScript?

    • The fetch() function is used to make asynchronous HTTP requests, returning a Promise that resolves to the response from the server​ (Built In)​.
    • Labels:

    Comments

    Post a Comment

    Popular posts from this blog

    best web development institute in jaipur with agn hub

    Agn Hub Tech and IT Solutions In this write-up, you will find the latest list of the best web development courses in Jaipur in 2024. If you are seeking the top institutes for web development training in Jaipur (Rajasthan), then your search ends here.  Going digital is the new norm, driving the business world. With IT becoming ubiquitous, businesses are moving to online platforms. No company can imagine surviving the fierce competition without marking its presence on the internet. It is the key source to connect with prospects, increase brand awareness, and spread the word about a product or service. Websites are the foremost step for businesses to interact with the audience and know about their tastes. A user-friendly, feature-rich, and appealing website can increase the chances of lead conversion. Hence, comes web development into play.  Introduction to Web Developmen Web development is a process of creating dynamic and powerful websites. A professional web developer looks af...
    Post a Comment
    Read more

    best digital marketing institute in jaipur near me vaishali nagar with agn hub computer institute

      AGN Hub Computer Institute: Also located in Jaipur, AGN Hub offers a variety of IT courses including digital marketing. They have experienced trainers and provide training on multiple aspects of digital marketing along with other IT skills like web development, graphic designing, and programming​ ( AgnHub ) ​. Top Digital Marketing Courses in Vaishali Nagar, Jaipur Agn Hub Tech and IT Solutions Service options:  Online classes · On-site services From Agn Hub Tech and IT Solutions "AGN HUB The Best Computer Training Institute in Jaipur provides easiest way of Computer training that is why students can get computer language and other course knowledge easily. It is a project based training institute where students can learn programming and other courses with there school academics and enhance there knowledge with experience faculties and professional trainers. Services we offer are. Computer programming languages (72+) courses 1. Web Designing 2. Web Development 3. App De...
    Post a Comment
    Read more

    python coaching in near me with vashali nager in agn hub computer classes jaipur Popular Python Training Institutes in Vaishali Nagar, Jaipur

      Experienced Faculty: AGN Hub boasts a team of skilled professionals with extensive industry experience, ensuring that students receive top-notch education. Flexible Learning Options: The institute offers both online and offline classes, catering to the needs of different learners. Practical Training: The Python course includes hands-on training and real-world projects to ensure students can apply their knowledge effectively. Certification: Upon successful completion of the course, students receive a globally recognized certificate. Placement Assistance: AGN Hub provides assistance with internships and job placements to help students kick-start their careers in the tech industry. Course Modules: Introduction to Python: Basics of Python programming Setting up the development environment Writing and executing Python scripts Data Types and Variables: Understanding different data types Working with variables and constants Type conversions Control Structures: Conditional statement...
    Post a Comment
    Read more