[JavaScript] switch

function test2(val){
    var answer = "";
    switch(val){
        case 1:
        case 2:
        case 3:
            answer = "Low";
            break;
        case 4:
        case 5:
        case 6:
            answer = "Mid";
            break;
        case 7:
        case 8:
        case 9:
            answer = "High";
            break;
    }
}