<分区>
如何禁用整个页面的 Ctrl+A 和 ctrl+C 键？我想禁用键盘的复制、粘贴功能。我发现了一些仅禁用一个文本框的链接。但我想禁用整个 HTML 页面的 ctrl 功能。
我将下面的代码粘贴到标签中，并在主体 onload 函数中添加了 disablePage。
<!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>