Question

如何禁用 Ctrl + A 和 ctrl + C 键到我的整个页面？我想从键盘上禁用复制，粘贴功能。我找到了一些只禁用一个文本框的链接。但我想禁用整个HTML页面的ctrl功能。

我在代码中粘贴了以下代码，并在正文disablePage函数中添加了onload。

<!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>

Answer 1

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;
}

将其放在您的<head>代码中，用户无法在您的网页上选择文字。但是，无法保证您的内容无法被盗。上述JavaScript可以通过体验互联网用户轻松绕过。例如。如果禁用浏览器的JavaScript，则代码将无法运行。工作副本位于 here 。

Answer 2

在脚本中它会检测到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;
}
}

Answer 3

    <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>

禁用Ctrl + A，Ctrl + C键功能到HTMl页面

3 个答案: