Javascript Practice 39: JS Hero - NOR

 

Question: 

Write a function nor that takes two Boolean values. If both values are false, the result should be true. In the other cases the return should be false.

I.e.: The call nor(false, false) should return true. The calls nor(true, false), nor(false, true) and nor(true, true) should return false.

Answer: 

function nor (boo1, boo2) {

let or = boo1 || boo2; 

return !or; 

}; 

> in the last post, I coded a NAND Gate (not and, !and) 

> in this post, I will code a NOR Gate (not or, !or)

> we declare a variable or

> we initialize it with a value of both our Boolean parameters

> like this boo1 || boo2

> so if boo1 or boo2, any one of them is true then variable 'or' will store the value true and in all other cases it will store the value of false

>> nor(true, false) = true

>> nor(false, true) = true

>> nor(true, true) = true

>> nor(false, false) = false

> but we need nor(false, false) to return true

> so instead of 'or' if we return '!or' (not or) then we shall get the value false