禁用 Ctrl+A、Ctrl+C 键功能到 HTMl 页面
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/19829078/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Disable Ctrl+A,Ctrl+C key functions to HTMl page
提问by Navyah
How do I disable Ctrl+Aand ctrl+Ckeys to my whole page? I want to disable Copy, paste functionality from the keyboard. I found a few links which disable only one textbox. but I want to disable the ctrlfunctionality to the whole HTML page.
如何禁用整个页面的Ctrl+A和ctrl+C键？我想从键盘禁用复制、粘贴功能。我发现了一些仅禁用一个文本框的链接。但我想禁用ctrl整个 HTML 页面的功能。
I pasted the below code in tag and added the disablePagein body onloadfunction.
我将以下代码粘贴到标签中并添加了disablePagein bodyonload函数。
<!DOCTYPE html>
<html lang="en">
<head>
<title>html2canvas example</title>
<script type="text/javascript" src="img/html2canvas.js"></script>
<script language=JavaScript>
function ieClicked() {
if (document.all) {
return false;
}
}
function firefoxClicked(e) {
if(document.layers||(document.getElementById&&!document.all)) {
if (e.which==2||e.which==3) {
return false;
}
}
}
if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=firefoxClicked;
}else{
document.onmouseup=firefoxClicked;
document.oncontextmenu=ieClicked;
}
document.oncontextmenu=new Function("return false")
function disableselect(e){
return false
}
function reEnable(){
return true
}
document.onselectstart=new Function ("return false")
if (window.sidebar){
document.onmousedown=disableselect
document.onclick=reEnable
}
</script>
<style>
canvas{border:1px solid #222}
</style>
</head>
<body>
<a class="upload" >Upload to Imgur</a>
<a href="#" download="canvasexport.pdf" onclick="window.print()" ><img src="images/print-icon.png" alt="Print" width="16" height="16" ></a>
<a href="#" id="download" download="diversio.pdf" onclick="printImg();">
<img src="images/print-icon.png" alt="Print" width="16" height="16" >
</a>
<h2>this is <b>bold</b> <span style="color:red">red</span></h2>
<p> Feedback form with screenshot This script allows you to create feedback forms which include a screenshot,
created on the clients browser, along with the form.
The screenshot is based on the DOM and as such may not be 100% accurate to the real
representation as it does not make an actual screenshot, but builds the screenshot based on the
information available on the page. How does it work? The script is based on the html2canvas library,
which renders the current page as a canvas image, by reading the DOM and the different styles applied
to the elements. This script adds the options for the user to draw elements on top of that image,
such as mark points of interest on the image along with the feedback they send.
It does not require any rendering from the server, as the whole image is created on the clients browser.
No plugins, no flash, no interaction needed from the server, just pure JavaScript! Browser compatibility Firefox 3.5+ Newer versions of Google Chrome, Safari & Opera IE9
</p>
</body>
</html>
回答by malcolmX
Try this out:
试试这个：
function disableselect(e) {
return false;
}
function reEnable() {
return true;
}
document.onselectstart = new Function("return false");
if (window.sidebar) {
document.onmousedown = disableselect;
document.onclick = reEnable;
}
Place this in your <head>tags and the user cannot select text on your page.However, there is no guarantee way to prevent your contents from being stolen.The JavaScript above can be easily bypassed by an experience internet user. E.g. If the browser's JavaScript is disabled, the code will not work. Working copy is available in here.
将它放在您的<head>标签中，用户无法选择您页面上的文本。但是，无法保证防止您的内容被盗。有经验的互联网用户可以轻松绕过上面的 JavaScript。例如，如果浏览器的 JavaScript 被禁用，代码将无法工作。工作副本可在此处获得。
回答by Sridhar R
In Script it will detect ctrl + a,ctrl + A,ctrl + c,ctrl + C, ctrl + u,ctrl + U
在脚本中它会检测 ctrl + a,ctrl + A,ctrl + c,ctrl + C, ctrl + u,ctrl + U
var isNS = (navigator.appName == "Netscape") ? 1 : 0;
if(navigator.appName == "Netscape") document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
function mischandler(){
return false;
}
function mousehandler(e){
var myevent = (isNS) ? e : event;
var eventbutton = (isNS) ? myevent.which : myevent.button;
if((eventbutton==2)||(eventbutton==3)) return false;
}
document.oncontextmenu = mischandler;
document.onmousedown = mousehandler;
document.onmouseup = mousehandler;
var isCtrl = false;
document.onkeyup=function(e)
{
if(e.which == 17)
isCtrl=false;
}
document.onkeydown=function(e)
{
if(e.which == 17)
isCtrl=true;
if(((e.which == 85) || (e.which == 117) || (e.which == 65) || (e.which == 97) || (e.which == 67) || (e.which == 99)) && isCtrl == true)
{
// alert(‘Keyboard shortcuts are cool!');
return false;
}
}
回答by Bensson
<html>
<head>
</head>
<body onkeypress="return disableCtrlKeyCombination(event);" onkeydown = "return disableCtrlKeyCombination(event);" >
how to disable the mouse right click and Ctrl +C in your web page ?
<script language=JavaScript>
<!--
//Disable right mouse click Script
var message="Function Disabled!";
///////////////////////////////////
function clickIE4(){
if (event.button==2){
alert(message);
return false;
}
}
function clickNS4(e){
if (document.layers||document.getElementById&&!document.all){
if (e.which==2||e.which==3){
alert(message);
return false;
}
}
}
if (document.layers){
document.captureEvents(Event.MOUSEDOWN);
document.onmousedown=clickNS4;
}
else if (document.all&&!document.getElementById){
document.onmousedown=clickIE4;
}
document.oncontextmenu=new Function("return false")
function disableCtrlKeyCombination(e)
{
//list all CTRL + key combinations you want to disable
var forbiddenKeys = new Array('a', 'c', 'x', 'v');
var key;
var isCtrl;
if(window.event)
{
key = window.event.keyCode; //IE
if(window.event.ctrlKey)
isCtrl = true;
else
isCtrl = false;
}
else
{
key = e.which; //firefox
if(e.ctrlKey)
isCtrl = true;
else
isCtrl = false;
}
//if ctrl is pressed check if other key is in forbidenKeys array
if(isCtrl)
{
for(i=0; i<forbiddenKeys.length; i++)
{
//case-insensitive comparation
if(forbiddenKeys[i].toLowerCase() == String.fromCharCode(key).toLowerCase())
{
alert('Key combination CTRL + ' +String.fromCharCode(key)+' has been disabled.');
return false;
}
}
}
return true;
}
// -->
</script>
</body>
</html>
