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Web Technology Basics Practice Test: Basic JavaScript Concepts
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Here are some basic JavaScript concepts: Variables: Variables are used to store data. They can be declared using the var, let, or const keywords. Data types: JavaScript has a number of data types, including strings, numbers, booleans, objects, and arrays. Operators: JavaScript has a number of operators that can be used to perform operations on data. Conditional statements: Conditional statements are used to control the flow of a program. Loops: Loops are used to repeat a block of code until a certain condition is met. Functions: Functions are used to group together a block of code that... Show more
Web Technology Basics Practice Test: Basic JavaScript Concepts
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25 Questions

1. The functions provide() and require() of Dojo toolkit and Google’s Closure library are used for ___________
2. Modules that have more than one item in their API can ________
3. When will the window property come into play?
4. Why JavaScript Engine is needed?
5. How to pick a document element based on the value of its id attribute?
6. JavaScript is ideal to ________
7. What can be done in order to avoid the creation of global variables in JavaScript?
8. Which of the following scoping type does JavaScript use?
9. The object that looks to the thread that creates it is _______________
10. The behaviour of the instances present of a class inside a method is defined by __________
11. The word “document” mainly refers to ______________
12. Which is the property that represents the content displayed in the window?
13. The properties() method is a ________
14. The method that can be used to create new properties and also to modify the attributes of existing properties is _________
15. The property of JSON() method is __________
16. Which property in the Window object is used to refer to a Location object?
17. Which of the following is an event emitter?
18. Which of the following functions are synchronous?
19. What is JavaScript?
20. Which of the following is a factory function?
21. A JavaScript program developed on a Unix Machine ________
22. How can we check the subprotocol being used by the client?
23. Which object is the main entry point to all client-side JavaScript features and APIs?
24. The basic difference between JavaScript and Java is _________
25. Which identifier is used to represent a web browser window or frame?

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