html - Javascript workout error with array elements -

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i curious know how alert massage punting element number (brazil 6) array instead of of putting name of countries. have tried in several ways not working.

html:

<body>     <div></div>  </body>

javascript : 

var cleancities = ["argentina" , "brazil", "canada ", "denmark"]; var visit = prompt("what city?"); var numlength = cleancities.length; var matchfound = false;  (i=0; i<numlength ; i++)      if (visit === cleancities[i]){          matchfound = true;         alert ("it nice city")         break;      }      if (matchfound === false){         alert ("it not in list");     }

first, clean braces , tabbing:

var cleancities = ["argentina" , "brazil", "canada ", "denmark"]; var visit = prompt("what city?"); var numlength = cleancities.length; var matchfound = false;  (i=0; i<numlength ; i++) {     if (visit === cleancities[i]) {         matchfound = true;         alert ("it nice city")         break;     } }  if (matchfound === false){     alert ("it not in list"); }

to length of string:

"brazil".length

outputs: 6


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