+=
operator, -=
subtracts a number from a variable.
myVar = myVar - 5;
will subtract 5
from myVar
. This can be rewritten as:
myVar -= 5;
a
, b
, and c
to use the -=
operator.
a
should equal 5
testString: 'assert(a === 5, ''a
should equal 5
'');'
- text: b
should equal -6
testString: 'assert(b === -6, ''b
should equal -6
'');'
- text: c
should equal 2
testString: 'assert(c === 2, ''c
should equal 2
'');'
- text: You should use the -=
operator for each variable
testString: 'assert(code.match(/-=/g).length === 3, ''You should use the -=
operator for each variable'');'
- text: Do not modify the code above the line
testString: 'assert(/var a = 11;/.test(code) && /var b = 9;/.test(code) && /var c = 3;/.test(code), ''Do not modify the code above the line'');'
```