What will the following JavaScript code snippet work? If not, what will be the error?
function tail(o)
{
for (; o.next; o = o.next) ;
return o;
}
a) No, this will throw an exception as only numerics can be used in a for loop
b) No, this will not iterate
c) Yes, this will work
d) No, this will result in a runtime error with the message “Cannot use Linked List”
Answer: c
Explanation: The above code uses a for loop to traverse a linked list data structure and return the last object in the list. This will perfectly work.
Related Posts
What would be the result or type of error if p is not defined in the following JavaScript code snippet?
console.log(p)What will be the output of the following JavaScript code if oddsums(5); is executed after the following code snippet?
function oddsums(n)
{
let total = 0, result=[];
for(let x = 1; x <= n; x++)
{
let odd = 2*x-1;
total += odd;
result.push(total);
}
return result;
}The main difference between the variables declared with var and with let is __________
The “let” keyword cannot be used ___________
What will be the output of the following JavaScript code?
const pi=3.14;
var pi=4;
console.log(pi);What will be the output of the following JavaScript code?
set.add(“1”);
set.add(“2”);
document.writeln(set.has(“3”));What will be the output of the following JavaScript code?
set.add(“one”);
set.add(“two”);
var itr=set.values();
document.writeln(itr.next().value);
Join The Discussion