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Document Object Model And Event Handling MCQ question and answer in javascript with solution

Learn Document Object Model And Event Handling MCQ Questions and answers in javascript with easy and logical explanations. Document Object Model And Event Handling MCQ question in Javascript which provides all type of technical mcq questions which is important for technical exams, cumpus exams and other entrance examination

Each section contains 100 MCQs on Document Object Model and Event Handling .
1
Which function among the following lets to register a function to be invoked once?
Discuss
Answer & Solution
Answer: Option A
Solution:
setTimeout() and setInterval() allow you to register a function to be invoked once or repeatedly after a specified amount of time has elapsed.
2
Which function among the following lets to register a function to be invoked repeatedly after a certain time?
Discuss
Answer & Solution
Answer: Option C
Solution:
setTimeout() and setInterval() allow you to register a function to be invoked once or repeatedly after a specified amount of time has elapsed.
3
Which is the handler method used to invoke when uncaught JavaScript exceptions occur?
Discuss
Answer & Solution
Answer: Option B
Solution:
The onerror handler method can be registered to be invoked when uncaught JavaScript exceptions occur.
4
Which property is used to obtain browser vendor and version information?
Discuss
Answer & Solution
Answer: Option D
Solution:
The navigator property is used to obtain browser vendor and version information.
5
Which method receives the return value of setInterval() to cancel future invocations?
Discuss
Answer & Solution
Answer: Option C
Solution:
Like setTimeout(), setInterval() returns a value that can be passed to clearInterval() to cancel any future invocations of the scheduled function.
6
The setTimeout() belongs to which object?
Discuss
Answer & Solution
Answer: Option B
Solution:
The setTimeout() method of the Window object schedules a function to run after a specified number of milliseconds elapses.
7
Which method receives the return value of setTimeout() to cancel future invocations?
Discuss
Answer & Solution
Answer: Option A
Solution:
setTimeout() returns a value that can be passed to clearTimeout() to cancel the execution of the scheduled function.
8
What will happen if we call setTimeout() with a time of 0 ms?
Discuss
Answer & Solution
Answer: Option B
Solution:
If you call setTimeout() with a time of 0 ms, the function you specify is not invoked right away. Instead, it is placed on a queue to be invoked “as soon as possible” after any currently pending event handlers finish running.
9
To which object does the location property belong?
Discuss
Answer & Solution
Answer: Option A
Solution:
The location property of the Window object refers to a Location object, which represents the current URL of the document displayed in the window, and which also defines methods for making the window load a new document.
10
What is the result of the following code snippet? 
window.location === document.location
Discuss
Answer & Solution
Answer: Option B
Solution:
The above code always results in a true value.