Sieve of Eratosthenes

sieve.js

function primes(from, to) {
    var arr = [];
    for(var i=from;i<=to;i++) arr.push(i);
    for(var check=0;check<to/2;check++) {
        for(var j=check+arr[check]; j<=to,j<=arr.length-1; j+=arr[check]) {
            arr.splice(j--,1);
        }
    }
    return arr;
}
var list = primes(2,1000).join(', ');