function date(x){ if(x>=10){ return x; } return "0"+x; } var m=date(m); var s=date(s); 这个怎么理解？<!DOCTYPE html><html> <head> <title> date </title> <script type="text/javascript"> function showdate(){ var mydate=new Date(); var y=mydate.getFullYear(); var M=mydate.getMonth()+1; var d=mydate.getDate(); var h=mydate.getHours(); var m=mydate.getMinutes(); var s=mydate.getSeconds();// function date(x){// if(x>=10){// return x;// }// return "0"+x;// }// var m=date(m);// var s=date(s); document.getElementById("p1").innerHTML=y+"/"+M+"/"+d+"<br/>"+h+":"+m+":"+s; setTimeout("showdate()",500) } </script> </head> <body onload="showdate()"> <p id="p1"></p> </body></html>
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