Earlier, we covered shorthand math operators.
This is what shorthand addition and subtraction look like:
let count = 0; count += 1; console.log(count); let retries = 3; retries -= 1; console.log(retries);
For the addition example, notice how we are only adding
1 to the value of the variable.
Adding and subtracting
1 is a very common operation in programming. To make it easier, we have special shorthand operators to add and subtract
Increment and Decrement Operators
1 to a variable, we use the increment operator, which is a double plus sign:
let count = 0; count++; console.log(count);
1 from a variable, we use the decrement operator, which is a double minus sign:
let retries = 3; retries--; console.log(retries);
There are several examples in the editor that use the shorthand addition operator to add just
1 to a variable.
Replace them with the increment operator to make the code cleaner.