JS 红包随机

微信随机红包，指定金额指定用户，随机发送红包

 var moneys = new Array();
 var moneyTotal = 0;
 function rand(obj){
     if(obj.size == 1){
         obj.size--;
         moneyTotal+=obj.money;
         moneys.push(obj.money);
         obj.money=0;
         return;
     }
     var r = Math.random();
     var min = 1;
     if(obj.size <= 2){
         var max = obj.money / obj.size;
     } else {
         var max = obj.money / obj.size * 2;
     }
     var money = r * max;
     money = Math.ceil(money);
     money = money <= min ? 1 : money;
     obj.size--;
     obj.money -= money;
     moneys.push(money);
     moneyTotal+=money;
     rand(obj);
 }
 var objs = {money:100,size:10};
 rand(objs);
 console.log(moneys);