Function equals

equals(text?, comparison?): boolean
Returns whether the given strings are equal
Parameters
- Optionaltext: null | string
  the source string to check
- Optionalcomparison: null | string
  the target string to compare
Returns boolean
whether the given strings are equal
Example
```
equals(undefined, null);    // false
equals('foo', 'foo');    // true
equals('foo', 'bar');    // false
```