What are the three important manipulations done in a for loop on a loop variable

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What are the three important manipulations done in a for loop on a loop variable?



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2) 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?

3) What will be the step of the interpreter in a jump statement when an exception is thrown?

4) What will happen if the body of a for/in loop deletes a property that has not yet been enumerated?

5) 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?

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