屏蔽右键、CTRL+A、复制 代码
A.):
<div style="width:200px;height:200px;" onselectstart="return false">
B.):
<script language="javascript">
document.oncontextmenu=new Function("event.returnValue=false;");
document.onselectstart=new Function("event.returnValue=false;");
</script>
C.):
<body oncontextmenu="window.event.returnValue=false" onkeypress="window.event.returnValue=false" onkeydown="window.event.returnValue=false" onkeyup="window.event.returnValue=false" ondragstart="window.event.returnValue=false" onselectstart="event.returnValue=false"> </body>
其他的：
<script language="Javascript">
//屏蔽鼠标右键、Ctrl+N、Shift+F10、F5刷新、退格键
//屏蔽F1帮助
function window.onhelp()
{
return false
}
function KeyDown()
{
//alert(event.keyCode);
//屏蔽 Alt+ 方向键 ← 屏蔽 Alt+ 方向键 →
if ((window.event.altKey)&&((window.event.keyCode==37)||(window.event.keyCode==39)))
{
//alert("不准你使用ALT+方向键前进或后退网页！");
event.returnValue=false;
}
//屏蔽退格删除键,屏蔽 F5 刷新键,Ctrl + R
if ((event.keyCode==116)||(event.ctrlKey && event.keyCode==82))
{
event.keyCode=0;
event.returnValue=false;
}
//屏蔽 Ctrl+n
if ((event.ctrlKey)&&(event.keyCode==78))
{
event.returnValue=false;
}
//屏蔽 shift+F10
if ((event.shiftKey)&&(event.keyCode==121))
{
event.returnValue=false;
}
//屏蔽 shift 加鼠标左键新开一网页
if (window.event.srcElement.tagName == "A" && window.event.shiftKey)
{
window.event.returnValue = false;
}
//屏蔽Alt+F4
if ((window.event.altKey)&&(window.event.keyCode==115))
{
window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
return false;
}
//屏蔽Ctrl+A
if((event.ctrlKey)&&(event.keyCode==65))
{
return false;
}
return false;
}
document.onkeydown=KeyDown;
</script>
别的：
1.文本框输入限制
实现限制输入大、小写英文，数字，浮点小数，日期，中文，部分英文，部分中文等众多功能。直接加入到html代码中即可使用。
<script>
function regInput(obj, reg, inputStr)
{
var docSel = document．selection.createRange()
if (docSel.parentElement().tagName != "INPUT") return false
oSel = docSel.duplicate()
oSel.text = ""
var srcRange = obj.createTextRange()
oSel.setEndPoint("StartToStart", srcRange)
var str = oSel.text + inputStr + srcRange.text.substr(oSel.text.length)
return reg.test(str)
}
</script>
小写英文：<xmp style= "display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[a-z]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[a-z]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[a-z]*$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled"><br>
大写英文：<xmp style= "display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[A-Z]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[A-Z]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[A-Z]*$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled">
<br>
任意数字：<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[0-9]*$/, String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[0-9]*$/, window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[0-9]*$/, event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled"><br>
限2位小数：<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^\d*\.?\d{0,2}$/,
String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^\d*\.?\d{0,2}$/,
window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^\d*\.?\d{0,2}$/,
event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled">
如: 123.12<br>
日 期：<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^\d{1,4}
([-\/](\d{1,2}([-\/](\d{1,2})?)?)?)?$/,
String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^\d{1,4}([-\/](\d{1,2}
([-\/](\d{1,2})?)?)?)?$/,
window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^\d{1,4}([-\/](\d{1,2}
([-\/](\d{1,2})?)?)?)?$/,
event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled">
如: 2002-9-29<br>
任意中文：<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^$/,
String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[\u4E00-\u9FA5]*$/,
window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[\u4E00-\u9FA5]*$/,
event.dataTransfer.getData('Text'))"><br>
部分英文：<xmp style="display:inline"> </xmp>
<input onkeypress = "return regInput(this, /^[a-e]*$/,
String.fromCharCode(event.keyCode))"
onpaste = "return regInput(this, /^[a-e]*$/,
window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[a-e]*$/,
event.dataTransfer.getData('Text'))"
style="ime-mode:Disabled">
范围: a,b,c,d,e<br>
部分中文：<xmp style="display:inline"> </xmp>
<script language=javascript>
function checkChinese(oldLength, obj)
{
var oTR = window.document．selection.createRange()
var reg = /[^一二三四五六七八九十]/g
oTR.moveStart("character", -1*(obj.value.length-oldLength))
oTR.text = oTR.text.replace(reg, "")
}
</script>
<input onkeypress="return false" onkeydown=
"setTimeout('checkChinese('+this.value.length+','+this.uniqueID+')',
1)"
onpaste = "return regInput(this, /^[一二三四五六七八九十]*$/,
window.clipboardData.getData('Text'))"
ondrop = "return regInput(this, /^[一二三四五六七八九十]*$/,
event.dataTransfer.getData('Text'))">
范围: 一二三四五六七八九十<br>
2.不能展开右键，不能全选，不能复制的实现
<body oncontextmenu="window.event.returnvalue=false"
onkeypress="window.event.returnvalue=false"
onkeydown="window.event.returnvalue=false"
onkeyup="window.event.returnvalue=false"
ondragstart="window.event.returnvalue=false"
onselectstart="event.returnvalue=false">
...
</body>
3.禁止页面正文内容被选取
<body oncontextmenu="return false" ondragstart="return false"
onselectstart ="return false" onselect="document．selection.empty()"
oncopy="document．selection.empty()" onbeforecopy="return false"onmouseup="document．selection.empty()">
4.避免别人把网页放在框架中
<script language=“javascript”><!--if (self!=top){top.location=self.location;}-->< /script>
5.禁示查看源代码
<frameset>
<frame src="你要保密的文件的URL">
</frameset>
6.关闭输入法
<input style="ime-mode:disabled">
7.禁止图片下载
在这里的最后加入：
oncontextmenu="return false" ondragstart="return false" onselectstart="return
false" scroll="auto"
8.禁止缓存
在HEAD里加入：
<meta http-equiv="Expires" CONTENT="0">
<meta http-equiv="Cache-Control" CONTENT="no-cache">
<meta http-equiv="Pragma" CONTENT="no-cache">
全正则的检测IP是否合法的函数 function checkIP2(sIPAddress)
{
var exp=/^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/;
var reg = sIPAddress.match(exp);
var ErrMsg="你输入的是一个非法的IP地址段！\nIP段为：:xxx.xxx.xxx.xxx（xxx为0-255)！"
var Msg="你输入的是一个合法的IP地址段！"
if(reg==null)
{
alert(ErrMsg);
}
else
{
alert(reg);
}
}
关闭子窗口时刷新父窗口 在子窗口
<script language="javascript">
window.opener.location="父窗口页面"
window.close()
</script>