| AllChars : Hello. Length : 5 |
| H |
| e |
| l |
| l |
| o |
| AllChars : HelloWorld. Length : 10 |
| H |
| e |
| l |
| l |
| o |
| W |
| o |
| r |
| l |
| d |
| Got a exception. String.prototype.charAt: 'this' is null or undefined |
| >> FirstChar : undefined |
| Got a exception. String.prototype.charAt: 'this' is null or undefined |
| >> FirstChar : 0 |
| 0 |
| << FirstChar. |
| >> FirstChar : 1.1 |
| 1 |
| << FirstChar. |
| >> FirstChar : 10 |
| 1 |
| << FirstChar. |
| >> FirstChar : Hello |
| H |
| << FirstChar. |
| >> FirstChar : true |
| t |
| << FirstChar. |
| >> FirstChar : false |
| f |
| << FirstChar. |
| >> FirstChar : true |
| t |
| << FirstChar. |
| >> FirstChar : [object Object] |
| [ |
| << FirstChar. |
