The “==” is used as a relational operator between the field and the value of 1 in this example. This returns “true” when the two expressions are equal.
The “=” operator is an assignment operator. Therefore, it is used when assigning values to variables. It is not a relational operator.
The “+=” is an assignment operator that increments the value of the variable on the left by the value of the expression on the right.
The “!=” operator is a relational operator returns “true” if the expressions are NOT equal.