Change value

Change, meaning increase, the value of a variable by some amount.

let x = 0
x += 2

The change blocks increase the value in the variable by the amount you want. This is also known as an addition assignment operation.

Change a declared variable

Use the change operator to set a new, larger value to a variable. If you let a variable have a value of 1, the change block makes the value change by 2 like this:

let x = 1
x += 2

See also

Variables, Assignment operator