📜 javascript jquery json quiz3 - Javascript (1)
📅 最后修改于: 2023-12-03 14:42:25.364000 🧑 作者: Mango
Javascript jQuery JSON Quiz3
Introduction
This is a quiz on Javascript, jQuery, and JSON. It will test your knowledge of these topics and their associated concepts and functions.
Rules
- There are 10 questions in this quiz.
- Each question has a single correct answer.
- You have 30 seconds to answer each question.
- Once you select an answer, it cannot be changed.
- You will receive points based on the number of correct answers and the time taken to answer them.
- Good luck!
Quiz
- What is the purpose of JSON in Javascript?
a) To create and manipulate HTML elements dynamically.
b) To handle errors and exceptions in code.
c) To store and transfer data in a structured format.
Answer: c
- What is the jQuery function used for selecting HTML elements?
a) getElementById()
b) getElementsByClassName()
c) $( )
Answer: c
- Which method in jQuery is used to add a new element to the DOM?
a) addClass()
b) append()
c) insertAfter()
Answer: b
- What is the name of the Javascript function that allows you to set a time interval for a function to be executed?
a) setInterval()
b) setTime()
c) setDelay()
Answer: a
- What is the name of the Javascript function that allows you to execute a function only once after a set amount of time has passed?
a) setSingleTimeout()
b) setTimeout()
c) setImmediate()
Answer: b
- Which operator is used in Javascript to concatenate two strings?
a) +
b) -
c) *
Answer: a
- Which method in jQuery is used to change the text content of an HTML element?
a) text()
b) html()
c) value()
Answer: a
- What is the name of the Javascript function used to convert a JSON string into an object?
a) JSON.parse()
b) JSON.stringify()
c) JSON.convert()
Answer: a
- Which method in jQuery is used to remove an HTML element from the DOM?
a) remove()
b) delete()
c) unload()
Answer: a
- What is the purpose of the JSON.stringify() function in Javascript?
a) To convert an object into a JSON string.
b) To convert a JSON string into an object.
c) To validate a JSON string.
Answer: a
Conclusion
Congratulations on completing the Javascript jQuery JSON Quiz3! We hope you learned something new and had some fun. Remember to keep practicing and expanding your knowledge of these important web development technologies.