Wrapping numbers with JavaScript

for (var i = 0; i < 30; i ++) {
    console.log(i % 5);
};

/*

Outputs:

0
1
2
3
4
0
1
2
3
4
0
1
2
3
4
0
1
2
3
4
0
1
2
3
4
0
1
2
3
4

*/