finding the nth prime javascript -

the functions below supposed spit out nth prime number. however, keeps on spitting out 3. can please help? cheers, anthony

function prime(num) { output = true       (i=2 ; i<num ; i++) {         if (num%i === 0)  {            output = false ; break         }     } return output }  function primemover(num) { var count = 0     (i=2 ; i<10000 ; i++)  {         if (prime(i) === true) {             count = count + 1          }         if (count === num) {             return             break         }      } } 

you have created loop counter i in global scope.so both primemover , prime mutates same global i.in every iteration ,primemover assigns i=2.after prime assigns i=2.your i variable's value changed between 2 , 3.use local loop counter variable var i=0;

function prime(num) { output = true   (var i=2 ; i<num ; i++) { //var i=2     if (num%i === 0)  {        output = false ; break     } } return output }  function primemover(num) { var count = 0 (var i=2 ; i<10000 ; i++)  { //var i=2     if (prime(i) === true) {         count = count + 1      }     if (count === num) {         return         break     }  } }