gistfile1.txt

function IsPrime(int) {

for(i=2;i<int;i++) {
var rest;
var result;
rest = int%i;

//No Prime
console.log(rest);
if((rest==0)) {console.log('0R');result=false;break;}

//Prime
if((rest>0&&i==int-1)) {console.log('Prime');result=true;break;}
}
return result;
}

console.log(IsPrime(4));
console.log('-----');
console.log(IsPrime(5));

gistfile2.txt

// EUL 6

var IterationCounter;
var IterationMax=10000; // Iterations -1
var Counter=1;
var PrimeCounter=1;

function IsPrime(int) {

for(i=2;i<int;i++) {
var rest;
var result;
rest = int%i;

//No Prime
//console.log(rest);
if((rest==0)) {//console.log('0R');
result=false;
break;}

//Prime
if((rest>0&&i==int-1)) {//console.log('Prime');
result=true;
break;}
}
return result;
}

//6th prime is 13 
console.log(IsPrime(4));
console.log(IsPrime(5));

do {
Counter++;
 // console.log(Counter);
if(IsPrime(Counter)==true){PrimeCounter++}
 // console.log('PrimeIterations:'+PrimeCounter);
} while (PrimeCounter<=IterationMax)

// Result
console.log("PrimeCounter: "+PrimeCounter);
console.log("Number: "+Counter);