What is the difference between the two lines given below ?<br/><pre> !!(obj1 && obj2); (obj1 && obj2);</pre>

What is the difference between the two lines given below ?

  !!(obj1 &&

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What is the difference between the two lines given below ?

  !!(obj1 && obj2); (obj1 && obj2);

Both the lines result in a boolean value “True”

Both the lines result in a boolean value “False”

Both the lines checks just for the existence of the object alone

The first line results in a real boolean value whereas the second line merely checks for the existence of the objects

Answer : D

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1) Consider the following code snippet :

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 ?

9

0

10

None of the mentioned

View Answer

2) Consider the following code snippet :

var tensquared = (function(x)
 {
return x*x;
}
(10));

Will the above code work ?

Yes, perfectly

Error

Exception will be thrown

Memory leak

View Answer

3) What is the difference between the two lines given below ?

  !!(obj1 && obj2); (obj1 && obj2);

Both the lines result in a boolean value “True”

Both the lines result in a boolean value “False”

Both the lines checks just for the existence of the object alone

The first line results in a real boolean value whereas the second line merely checks for the existence of the objects

View Answer

4) A function with no return value is called

Procedures

Method

Static function

Dynamic function

View Answer

5) The function definitions in JavaScript begins with

Identifier and Parantheses

Return type and Identifier

Return type, Function keyword, Identifier and Parantheses

Identifier and Return type

View Answer

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What is the difference between the two lines given below ?
!!(obj1 &&

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