Javascript
JavaScript Knowledge Challenge
Test your knowledge of JavaScript with our engaging quiz designed for developers of all levels. Whether you're a beginner or an expert, this quiz will challenge your understanding of key concepts, syntax, and best practices.
Features:
- 10 carefully crafted questions
- Immediate feedback on your answers
- Improve your JavaScript skills!
1. The development environment offers which standard construct for data validation
A) Super controlled loop constructs
B) Case sensitivity check
C) Validation constructs
D) All of the mentioned
2. Consider the following code snippet
function printprops(o) { for(var p in o) console.log(p + ": " + o[p] + "\n"); }
What will the above code snippet result ?
A) Prints the contents of each property of o
B) Returns undefined
C) All of the mentioned
D) None of the mentioned
3. What is being imposed on each subset to ensure that it conforms to the subset?
A) A parser to parse the code
B) A parser that parses and adds to the subset
C) A static verifier that parses code
D) All of the mentioned
4. A linkage of series of prototype objects is called as
A) prototype stack
B) prototype chain
C) prototype class
D) prototypes
5. Which is the subset that is a secure container designed for the purpose of safely running untrusted JavaScript?
A) Sandbox
B) The Good Parts
C) Both Sandbox and Good Parts
D) None of the mentioned
6. Which attribute is used to specify that the script is executed when the page has finished parsing ( only for external scripts )
A) parse
B) a sync
C) defer
D) type
7. A function with no return value is called
A) Procedures
B) Method
C) Static function
D) Dynamic function
8. The object has three object attributes namely
A) Class, parameters, object’s extensible flag
B) Prototype, class, objects’ parameters
C) Prototype, class, object’s extensible flag
D) Native object, Classes and Interfacces and Object’s extensible flag
9. Which was one of the first security subsets proposed?
A) FBJS
B) Caja
C) dojox.secure
D) ADSafe
10. The method that can be used to create new properties and also to modify the attributes of existing properties is
A) Object.defineProperty()
B) Object.defineProperties()
C) Both Object.defineProperty() and Object.defineProperties()
D) None of the mentioned
{"name":"Javascript", "url":"https://www.quiz-maker.com/QPREVIEW","txt":"Test your knowledge of JavaScript with our engaging quiz designed for developers of all levels. Whether you're a beginner or an expert, this quiz will challenge your understanding of key concepts, syntax, and best practices.Features:10 carefully crafted questionsImmediate feedback on your answersImprove your JavaScript skills!","img":"https:/images/course5.png"}