整形转2进制后里面有多少个1

var input = 10140101;//传入的参数
var count = 0;
function getCount(ins){
    if(ins == 0){ 
        return count;
    }   
    var ret = ins%2;
    var shan = Math.floor(ins/2);
    
    if(ret == 1){ 
        count++;
    }   
    return getCount(shan);
}

var ret = getCount(input);
console.log(ret);