Javascript Loops MCQ Questions and Answers
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1) Consider the following code snippet
function printArray(a)
{
var len = a.length, i = 0;
if (len == 0)
console.log("Empty Array");
else
{
do
{
console.log(a[i]);
}
while (++i < len);
}
}
What does the above code result?
Answer : A Discuss
2) What are the three important manipulations done in a for loop on a loop variable?
Answer : B Discuss
3) Consider the following code snippet
function tail(o)
{
for (; o.next; o = o.next) ;
return o;
}
Will the above code snippet work? If not, what will be the error?
Answer : C Discuss
4) One of the special feature of an interpreter in reference with the for loop is that
Answer : A Discuss
5) What will happen if the body of a for/in loop deletes a property that has not yet been enumerated?
Answer : C Discuss
6) What will be the step of the interpreter in a jump statement when an exception is thrown?
Answer : C Discuss
7) Consider the following code snippet
while (a != 0)
{
if (a == 1)
continue;
else
a++;
}
What will be the role of the continue keyword in the above code snippet?
Answer : C Discuss
8) Consider the following code snippet
function f(o)
{
if (o === undefined)
debugger;
}
What could be the task of the statement debugger?
Answer : A Discuss
9) Among the keywords below, which one is not a statement?