js时间转换

window.onload=function(){ ???setInterval("mytime()",1000);}function mytime(){ ????document.getElementById("time").innerHTML = fmtDate(new Date());}function fmtDate(obj){ ???var date = ?new Date(obj); ???var y = 1900+date.getYear(); ???var m = "0"+(date.getMonth()+1); ???var d = "0"+date.getDate(); ???var h = "0"+date.getHours(); ??????var min = "0"+date.getMinutes(); ???var s = "0"+date.getSeconds(); ???return y+"年-"+m.substring(m.length-2,m.length)+"月-"+d.substring(d.length-2,d.length)+"日-"+h.substring(h.length-2,h.length)+"时-"+min.substring(min.length-2,min.length)+"分-"+s.substring(s.length-2,s.length)+‘秒‘;}