JavaScript and Angular JS

1. Which of following tag is used to link Javacript ?
   1. style
   2. link
   3. script
   4. jlink
   Show Answer

   Answer : C
   Explain: script tag is used to link external Javascript.
2. What is the extension of Javascript file ?
   1. css
   2. jsj
   3. jss
   4. js
   Show Answer

   Answer : D
   Explain: Extension of javascript file is .js
3. Which of the following is true about AngularJS expressions ?
   1. Expressions behave in same way as ng-bind directives
   2. Expressions are used to bind application data to html
   3. Expressions are written inside double braces like {{expression}}
   4. All of these
   Show Answer

   Answer : D
   Explain: All the point regarding to angularJS is true.
4. What MVC stands for?
   1. Model View Control
   2. Model Viewpoint Control
   3. Model View Controller
   4. Main View Control
   Show Answer

   Answer : C
   Explain: Angular JS supports MVC, is used for software design.
5. What is a Model in MVC ?
   1. the lowest level of the pattern responsible for maintaining data
   2. represents server-side data
   3. represents data stored in a database
   4. None of these
   Show Answer

   Answer : A
   Explain: In MVC, Model- is responsible for maintaing the data.
6. Which is the correct syntax to call an external JavaScript file in the current HTML document ?
   1. <script src=" test.js"></script>
   2. <script href=" test.js"></script>
   3. <import src=" test.js"></import>
   4. <import link=" test.js"></import>
   Show Answer

   Answer : A
   
7. Which statement specify correct difference between var and let keywords in JavaScript ?
   1. var defines a variable while let defines a constant.
   2. There is no such major difference between them.
   3. The value of a variable declared with var can be changed while the value of a variable declared with let cannot be changed.
   4. var defined function scoped variable while let define block scoped variable.
   Show Answer

   Answer : D
   Explain: var and let are both used for variable declaration in javascript but the difference between them is that var is function scoped and let is block scoped.
8. Which of the following is not a mouse event ?
   1. onclick
   2. onmousescroller
   3. onmouseover
   4. onmousemove
   Show Answer

   Answer : B
   Explain: onmousemove, onmouseover and onclick are mouse event in HTML DOM Event.
9. The correct syntax to write “Sky is blue” in JavaScript is :
   1. jscript.write(“Sky is blue”)
   2. document.write(“Sky is blue”)
   3. print(“Sky is blue”)
   4. jscript.print(“Sky is blue”)
   Show Answer

   Answer : B
   Explain: document.write("text-here") is correct way to write any text.
10. Wich of the following way to get element by ID ?
    1. document.getElementByclass
    2. document.getElementByid
    3. document.getElementByTag
    4. None of these
    Show Answer

    Answer : B
    Explain: To get element by id we can use - document.getElementByid("id_name").
11. Which of the following expressions is true ?
    1. { expression }
    2. [{ expression }]
    3. {{expression }}
    4. _expression }
    Show Answer

    Answer : C
    Explain: {{ expression } is correct way.
12. Which directive is used for data binding in AngularJS?
    1. ng-data
    2. ng-app
    3. ng-bind
    4. ng-controller
    Show Answer

    Answer : C
    Explain: ng-bind is used to bind data in AngularJs.
13. For what purpose Javascript is designed for ?
    1. To style HTML Pages
    2. To perform server-side scripting operation
    3. To execute the query related to DB on server
    4. To add interactivity to HTML Pages
    Show Answer

    Answer : D
    
14. AngularJS is a __________.
    1. HTML Framework
    2. .Net Framework
    3. JavaScript framework
    4. Oracle Framework
    Show Answer

    Answer : C
    Explain: AngularJS is a javascript framework written in Javascript and structural framework use for dynamic web apps.
15. What is a module in AngularJS ?
    1. expression
    2. application
    3. element
    4. None of above
    Show Answer

    Answer : B
    Explain: An AngularJS module defines an application. The module is a container/box for the different parts of an application.
16. The script tag must be placed in
    1. head tag only
    2. below title tag
    3. head or body tag
    4. body tag only
    Show Answer

    Answer : C
    Explain: The script tag should either be included between the <head> tags or just before the closing <body> tag in your HTML document.
17. A module in AngularJS can be created using :
    1. angularjs.module
    2. module.angular
    3. angular.modules
    4. angular.module
    Show Answer

    Answer : D
    Explain: To create a module in AngularJS, we use angular. module("app").
18. The alert() function in JavaScript is used for :
    1. To display a virtual alert box
    2. To display output on console
    3. To evaluate the expression
    4. Both (A) and (C)
    Show Answer

    Answer : A
    Explain: alert() used to display virtual alet box on the screen.
19. AngularJS developed by __________ and follows __________ .
    1. Amazon, Model View System
    2. Misko Hevery, Model View Controller
    3. Elon Musk, Model View Data
    4. Bill Gates, Spiral Model
    Show Answer

    Answer : B
    Explain: AngularJS was created in 2009 by Miško Hevery, a developer working at Google and follows MVC.
20. Which of the following directives are used in AngularJS ?
    1. ng - app
    2. nc - init
    3. Both A and B
    4. None of above
    Show Answer

    Answer : A
    Explain: AngularJS directives are extended HTML attributes with the prefix ng-. So, ng-app is a directive here.