Computer Science and Engineering › Javascript loops MCQ › Question #5067
Single Choice Easy

QWhat could the statement debugger in the following JavaScript code be doing? 
function f(o) 
{
     if (o === undefined) debugger;
}

ID: #5067 Javascript loops MCQ 217 views
Question Info
#5067Q ID
EasyDifficulty
Javascript loops MCQTopic
Start Quiz on This Topic
 Your Answer

Choose the Best Option

Click any option to instantly check if you're correct.

  • A It does nothing but a simple breakpoint ✔ ✖
  • B It debugs the error in that statement and restarts the statement's execution ✔ ✖
  • C It is used as a keyword that debugs the entire program at once ✔ ✖
  • D It is used to find error in the statement ✔ ✖
Correct Answer

Explanation

The debugger statement typically has no effect. However, if a debugger is available and running, the implementation may (but is not required to) perform some kind of debugging action.
In practice, this statement functions like a breakpoint, causing the execution of JavaScript code to stop and allowing you to use the debugger to print out the values of variables.

 Continue Practice
Previous Question Next Question
 Share

Share This Question

Challenge a friend or share with your study group.

 More from This Topic

Related MCQ Questions

What are the three most important manipulations performed on a loop variable in a for loop?... What happens if the for/in loop body deletes a property that has not yet been enumerated?... What is the purpose of the continue keyword in the following JavaScript code snippet? while (a != 0) { if (a == 1) continue; else a++; }... Which of the following keywords is not a statement?... What could the statement debugger in the following JavaScript code be doing? function f(o) { if (o === undefined) debugger; }... What is the purpose of the continue keyword in the following JavaScript code snippet? while (a != 0) { if (a == 1) continue; else a++; }... One of the unique characteristics of an interpreter in relation to the for loop is that... What happens if the body of a for/in loop deletes an unenumerated property?... When an exception is thrown, what step will the interpreter take?...