What are bitwise operators?

Question

I\'m someone who writes code just for fun and haven\'t really delved into it in either an academic or professional setting, so stuff like these bitwise operators really esca

Answer 1

When the term "bitwise" is mentioned, it is sometimes clarifying that is is not a "logical" operator.

For example in JavaScript, bitwise operators treat their operands as a sequence of 32 bits (zeros and ones); meanwhile, logical operators are typically used with Boolean (logical) values but can work with non-Boolean types.

Take expr1 && expr2 for example.

Returns expr1 if it can be converted to false; otherwise, returns expr2. Thus, when used with Boolean values, && returns true if both operands are true; otherwise, returns false.

a = "Cat" && "Dog"     // t && t returns Dog
a = 2 && 4     // t && t returns 4

As others have noted, 2 & 4 is a bitwise AND, so it will return 0.

You can copy the following to test.html or something and test: