相关疑难解决方法(0)

如何修改此代码以在低于10的任何数字之前添加0

$('#detect').html( toGeo(apX, screenX)  + latT +', '+ toGeo(apY, screenY) + lonT  );

function toGeo(d, max) {
   var c = '';

   var r = d/max * 180;
   var deg = Math.floor(r);
   c += deg + "° ";

   r = (r - deg) * 60;
   var min = Math.floor(r);
   c += min + "? ";

   r = (r - min) * 60;
   var sec = Math.floor(r);
   c += sec + "?";

   return c;
}

因此,输出将改变

4°7'34"W,168°1'23"N

至

04°07'34"W,168°01'23"N

谢谢你的时间