当前时间: <span id="localtime"> </span> <script> function showLocale(objD) { var dn, str; var hh = objD.getHours(); var mm = objD.getMinutes(); var ss = objD.getSeconds(); //str = (objD.getMonth() + 1) + "月" + objD.getDate() +"日";
if(hh <10) hh = '0' + hh; if(mm <10) mm = '0' + mm; if(ss <10) ss = '0' + ss; str += " " + hh + ":" + mm + ":" + ss; return(str); } function tick() { var today; today = new Date(); document.getElementById("localtime").innerHTML = showLocale(today); window.setTimeout("tick()", 1000); } tick(); </script>
<script>
function showLocale(objD)
{
var dn, str;
var hh = objD.getHours();
var mm = objD.getMinutes();
var ss = objD.getSeconds();
//str = (objD.getMonth() + 1) + "月" + objD.getDate() +"日";
if(hh <10) hh = '0' + hh;
if(mm <10) mm = '0' + mm;
if(ss <10) ss = '0' + ss;
str += " " + hh + ":" + mm + ":" + ss;
return(str);
}
function tick()
{
var today;
today = new Date();
document.getElementById("localtime").innerHTML = showLocale(today);
window.setTimeout("tick()", 1000);
}
tick();
</script>
当前时间: undefined 12:31:40
那这个undefined改如何消灭掉呢
<script>
function showLocale(objD)
{
var dn, str='';
var hh = objD.getHours();
var mm = objD.getMinutes();
var ss = objD.getSeconds();
//str = (objD.getMonth() + 1) + "月" + objD.getDate() +"日";
if(hh <10) hh = '0' + hh;
if(mm <10) mm = '0' + mm;
if(ss <10) ss = '0' + ss;
str += " " + hh + ":" + mm + ":" + ss;
return(str);
}
function tick()
{
var today;
today = new Date();
document.getElementById("localtime").innerHTML = showLocale(today);
window.setTimeout("tick()", 1000);
}
tick();
</script>