Timer的问题

Question

<form name="form1" action="test.asp" target="in">
<input type="text" name="time">
<input type="submit">
</form>
<script>
var i=0
window.onload=function recordtime()
{
  i++;
  document.form1.time.value=i;
  window.timer=window.setTimeout('recordtime()',1000)
}
document.all.form1.onsubmit=function(){clearTimeout(window.timer)}
</script>
<iframe name="in"></iframe>

Answer 1

如你是用form1.submit()来提交的话,
因为onsubmit事件,只有正真的点击了submit按钮才能触发.
所以,就要写成<form name="form1" action="test.asp" target="in">
<input type="text" name="time">
<input type="button" onclick="sub()" value="提交">
</form>
<script>
var i=0
window.onload=function recordtime()
{
  i++;
  document.form1.time.value=i;
  window.timer=window.setTimeout('recordtime()',1000)
}function sub()
{
   form1.submit()
   clearTimeout(window.timer);
}
</script>
<iframe name="in"></iframe>