Change item value from 5 to good

[Clives]

Greetings,
I have spent ages searching javascript in Google, but couldn't find any pointers or examples.

I have a range of values returned in a Table ranging from 1 to 50.

Output:
<table>
   <td>{{response.responsetime}}</td>
</table>

If the value is less than 15, want to return it as good (green - cs), rather than 15.

Could anyone kindly point me to the Javascript method/class??? Spent hours searching, but have not returned any useful results..

Regards,

Clive