Example code for JavaScript to disable page manipulation
- 2020-03-30 00:54:17
- OfStack
Single JS prohibited page right-click menu - to avoid website information theft
<script type="text/javascript">
function block(oEvent){
if(window.event)
oEvent=window.event;
if(oEvent.button==2)
alert(" Right mouse button is not available ");
}
document.onmousedown=block;
</script>
The prohibition of copying on web pages is mainly implemented by JavaScript.
< BODY oncontextmenu="return false" onselectstart="return false"
Ondragstart ="return false" onbeforecopy="return false" oncopy=document.selection. Empty () onselect=document.selection. Empty ()>
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Prevent copying of js
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<SCRIPT language=JavaScript1.2>
function disableselect(e){
return false}
function reEnable(){return true
}
file://if IE4+
document.onselectstart=new Function ("return false")
file://if NS6
if (window.sidebar){
document.onmousedown=disableselect
document.onclick=reEnable
}
</SCRIPT>
<SCRIPT language=JavaScript type=text/JavaScript>
<!--
function MM_reloadPage(init) { //reloads the window if Nav4 resized
if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//-->
</SCRIPT>
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Prevent downloading of js
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< Noscript> < Iframe SRC = "" > < / iframe> < / noscript>
--------------------------------------------------------
The following is to prevent right-click js:
<script language="JavaScript">
<!--
if (window.Event)
document.captureEvents(Event.MOUSEUP);
function nocontextmenu() {
event.cancelBubble = true
event.returnValue = false;
return false;
}
function norightclick(e) {
if (window.Event){
if (e.which == 2 || e.which == 3)
return false;
}else{
if (event.button == 2 || event.button == 3){
event.cancelBubble = true
event.returnValue = false;
return false;
}
}
}
document.oncontextmenu = nocontextmenu; // for IE5+
document.onmousedown = norightclick; // for all others
//-->
</script>
<title>CSS Select and copy are not allowed </title>
<meta http-equiv="content-Type" content="text/html;charset=gb2312">
<style>
body{
-moz-user-select:none;
hutia:expression(this.onselectstart=function(){return(false)});
}
</style>
</head>
<body>
Here is the content of the web page. Can you copy it?
</body>
</html>
Application examples:
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>JS Control page </title>
<script language="javascript" type="text/javascript">
//Disable users from using email (hide right-click menu)
document.oncontextmenu = function forbidRightKey() {
window.event.returnValue = false;
}
//Disable users from using email (prompt users to disable right-click)
function block() {
var oEvent;
if (window.event)
oEvent = window.event;
if (oEvent.button == 2)
alert(" Right mouse button is not available ");
}
document.onmousedown = block;
//When the user presses the AltF4, the window information is prompted to close
function altF4() {
if (window.event.altKey && window.event.keyCode == 115) {
window.close();
}
}
//Alt left mouse button composition shortcut select the text box in the content of the call mode <Body onkeydown = "altF4 ();">
function getTxtSelect(eventControl) {
if (eventControl.altKey) {
document.getElementById("txt1").select();
}
}
function clearTxtByInput() {
document.getElementById("txtContent").value = "";
}
function FillTxtByInput() {
document.getElementById("txtContent").value = " Enter search criteria ";
}
//Disable certain keys on the keyboard to call onkeydown="ForbidKeys();"
function ForbidKeys() {
var content = window.event.keyCode;
if (content >= 65 && content <= 68) {
window.event.returnValue = false;
} else {
window.alert(content);
}
}
//Copying web content is prohibited. Body oncopy = "forbidCopy ();">
function forbidCopy() {
window.event.returnValue = false;
window.clipboardData.setData("Text", "");
alert(" Do not copy web content! ");
}
//Set the URL of this website to copy the content
function SetCopyContent() {
window.event.returnValue = false;
var content = document.title + "/r/n";
content += document.getElementById("txt1").value + "/r/n";
content += " This resource comes from " + this.location.href;
window.clipboardData.setData('Text', content);
alert(" Copy successful, please paste into yours QQ/MSN Recommend it to your friends ");
}
//Refresh F5 and Ctrl+F5 are not allowed
function ForbidFreshPage() {
if ((window.event.ctrlKey && window.event.keyCode == 116) || window.event.keyCode == 116) {
window.event.keyCode = 0;
window.event.returnValue = false;
}
}
document.onkeydown = ForbidFreshPage;
//Blocking JS error
function killErrors() {
return true;
}
window.onerror = killErrors;
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input id="txt1" type="text" value="Hello World!" onclick="getTxtSelect(event)"/>
<input type="button" value=" Copy the value in the text box " onclick="SetCopyContent();" />
<input id="txtContent" value=" Enter search criteria " style="color:Aqua" onclick="clearTxtByInput();" onblur="FillTxtByInput();" />
<p>content</p>
</div>
</form>
</body>
</html>