<script type="text/javascript">function startTime(){var today=new Date()var h=today.getHours()var m=today.getMinutes()var s=today.getSeconds()// add a zero in front of numbers<10m=checkTime(m)s=checkTime(s)document.getElementById('txt').innerHTML=h+":"+m+":"+st = setTimeout('startTime()',500)//t = setTimeout("S()",500); ?為什么要賦值給t而不直接寫成setTimeout("S()",500);}function checkTime(i){if (i<10)?? {i="0" + i}? return i}</script>
t = setTimeout("S()",500); 為什么要賦值給t而不直接寫成 setTimeout("S()",500);
趙日天l
2016-07-15 00:46:16
