【高手帮助】怎样写一个选择小时，分钟js？不用下拉菜单显示

来源：百度知道 编辑：UC知道 时间：2024/06/03 09:54:52
小时，分钟都用上下箭头选择

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
function add(){
var h = hour.value;
var m = minute.value;
if(m.substring(0,1) == 0){
m = m.substring(1,2);
}
if(h.substring(0,1) == 0){
h = h.substring(1,2);
}
m = m - (-1);
if(m > 59){
m = 0;
h ++;
}
if(h > 23){
h = 0;
}
if(m < 10){
m = "0" + m;
}
if(h < 10){
h = "0" + h;
}
minute.value = m;<