Generate chilean RUT between min and max values

rut.js

var dv, rut, min, max;
var M=0,S=1;
 
var T = Math.floor(Math.random() * (max - min + 1)) + min;
rut = T;
for(;T;T=Math.floor(T/10)) {
  S=(S+T%10*(9-M++%6))%11;
}
dv= S?S-1:'K';
rut = rut + '-' + dv;