Array And Function MCQ question and answer in javascript with solution

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22.
Consider the following code snippet : 
var tensquared = (function(x) {return x*x;}(10));
Will the above code work ?

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23.
Consider the following code snippet : 
var string2Num=parseInt("123xyz");
The result for the above code snippet would be :

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24.
If you have a function f and an object o, you can define a method named m of o with

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25.
For the below mentioned code snippet: 
var o = new Object();
The equivalent statement is:

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26.
What is the difference between the two lines given below ? 
!!(obj1 && obj2);
(obj1 && obj2);

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27.
Consider the following code snippet : 
var c = counter(), d = counter(); 
c.count()
d.count() 
c.reset() 
c.count() 
d.count()
The state stored in d is :

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28.
Consider the following code snippet : 
var c = counter(), d = counter(); 
function constfuncs() 
{
    var funcs = [];
    for(var i = 0; i < 10; i++)
        funcs[i] = function() { return i; };
    return funcs;
}
var funcs = constfuncs();
funcs[5]()
What does the last statement return ?

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29.
What kind of scoping does JavaScript use?

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30.
What must be done in order to implement Lexical Scoping?

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