帮忙看看这段javascirpt有什么错

Question

document.getElementbyId("tMorningComeStart"+num+"_txtHour").value=document.getElementbyId("Time1_txtHour").value;错误提示:
行:23
字符:6
代码:0
错误:对象不支持此属性或方法
网址:http://localhost/admin/TimeSet.aspx?SchoolID=16

Answer 1

Eval("tMorningComeStart"+num+"_txtHour").value

Answer 2

把localhost换过来啊
http://localhost/admin/TimeSet.aspx?SchoolID=16

Answer 3

document.all("tMorningComeStart"+num+"_txtHour").value=document.all("Time1_txtHour").value;这样看看.

Answer 4

(document.getElementbyId("tMorningComeStart"+num+"_txtHour")).value=(document.getElementbyId("Time1_txtHour")).value;