function AddDropDownList(id,fatherCtl)
{
if(!document.getElementById(id))
{
var ddl = document.createElement('select');
ddl.setAttribute("id",id);
if(fatherCtl&&document.getElementById(fatherCtl))
document.getElementById(fatherCtl).appendChild(ddl);
else
document.body.appendChild(ddl);
}
}
//删除指定的下拉框
function RemoveDropDownList(id)
{
var ctl = document.getElementById(id);
if(ctl)
ctl.parentNode.removeChild(ctl);
}
//给下拉框添加选项
function AddDDDLOption(id,text,value)
{
var ctl = document.getElementById(id);
if(ctl)
{
ctl.options[ctl.options.length] = new Option(text,value);
}
}
//删除所有选项
function RemoveAllDDLOptions(id)
{
var ctl = document.getElementById(id);
if(ctl)
{
ctl.options.length=0;
}
}
//删除指定索引的选项
function RemoveDDLOption(id,index)
{
var ctl=document.getElementById(id);
if(ctl && ctl.options[index])
{ &n
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<!-- saved from url=(0041)/ -->
<html xmlns="http://www.w3.org/1999/xhtml">
<HEAD>
<TITLE>JavaScript仿Excel表格演示- /</TITLE>
< ......
1. oncontextmenu="window.event.returnValue=false" 将彻底屏蔽鼠标右键
<table border oncontextmenu=return(false)><td>no</table> 可用于Table
2. <body onselectstart="return false"> 取消选取、防止复制
3. onpaste="return false" 不准粘贴
4. oncopy="return false;" oncut="return ......
function select_all(){
var paras = document.getElementsByTagName("input");//全选checkbox
if(document.getElementById("all").checked==true){
for(var i=0; i<paras.length; i++){
var name = paras[i].getAttribute("name") //单选checkbox的name均d ......
