1.
which of the following javascript statement is to compare if num is 2 or 5, if yes, increment num by 1?
if( num==2 || 5)
num = num +1;
if( num==2 || num==5)
num = num +1;
if( num=2 || 5)
num = num +1;
if( num==2 || num=5)
num = num +1;

Hi!

The following Javascript statement compares if num is 2 or 5 and increment num by 1 if true.

if ( num==2 || num==5)  

num = num +1;

Explanation:

The operator == is used to compare if the operands are equal.

The operator || is OR.

if( num==2 || num==5) // if num is equal 2 or if num is equal 5

num = num +1; // adds 1 to num.

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