Need help with computer science Why wont this javascript code execute

/in /by 

<!Doctype html> 
<html> 
<title>JavaScript Tutorial</title> 
<body> 
<script language = "javascript"> 
var cleanCities = ["Cheyenne ","Santa Fe ","Tucson ","Great Falls ","Honolulu"]; 
var cityToCheck = "Tucson"; 
if(cityToCheck === cleanCities[i]) 
{ 
alert("You are clean"); 
} 
</script> 
</body> 
</html> 
it looks logically and syntactically correct so im not sure what im missing.

 
Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount!
Use Discount Code "Newclient" for a 15% Discount!

NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.