Menu
The != operator is an equality operator that is used to check whether two operands are equal or not. The =! operator is a combination of two operators, one is an assignment, and the second is a negation operator that works on boolean value.
A!= B means " A is not equal to B ". A=! B means "Assign the complement of B to A , and yield the lvalue of A ".
=+ does nothing; it's the same as = here. You have just written sum1 = two . sum2 += one on the other hand is essentially the same as sum2 = sum2 + one .
== === = in JavaScript is used for assigning values to a variable. == in JavaScript is used for comparing two variables, but it ignores the datatype of variable. === is used for comparing two variables, but this operator also checks datatype and compares two values.
The question is just playing with you with confusing spacing.
b != b is the usual != (not equals) comparison.
On the other hand:
b =! b is better written as b = !b which is parsed as:
b = (!b)
Thus it's two operators.
b.b.The assignment operator returns the assigned value. Therefore, (b =! b) evaluates to true - which is what you print out.
b != b means ! (b == b): the opposite of b == b.
b =! b is actually b = !b, an assignment. It's toggling b's value. An assignment evaluates to the value of the expression, so this will evaluate to !b (along with having changed the value of b).
b=!b is an assignment. It assigns b to !b and the expression evaluates to the resulting value, which is true.
b =! b
you are doing an assignment, you are saying that B should have the value of !B.
b != b
You are asking if B is different than b
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With