如何使用javascript禁用打印屏幕? [英] How to disable printscreen with javascript?
本文介绍了如何使用javascript禁用打印屏幕?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想在使用打印屏幕后更改剪贴板值的 javascript 中创建函数.那可能吗?
I want to make function in javascript which change value of clipboard after the printscreen was used. Is that possible?
$(document).keyup(function(e){if(e.keyCode == 44)//更改剪贴板值代码});
我找到了 ZeroClipboard 库，但每个教程都是关于使用按钮复制的.我只想更改剪贴板的值.
I found ZeroClipboard library but every tutorial is about copy with button. I want just change the value of clipboard.
推荐答案
还有另一种方法可以在您的网站中禁用 Print Screen(它适用于我的网站).点击这里转到我的笔(Codepen.io).这里还有一个片段:
There is another way to disable Print Screen in your website (it worked for my website). Click here to go to my Pen (Codepen.io). Here is also a snippet:
document.addEventListener("keyup", function (e) {
var keyCode = e.keyCode ? e.keyCode : e.which;
if (keyCode == 44) {
stopPrntScr();
}
});
function stopPrntScr() {
var inpFld = document.createElement("input");
inpFld.setAttribute("value", ".");
inpFld.setAttribute("width", "0");
inpFld.style.height = "0px";
inpFld.style.width = "0px";
inpFld.style.border = "0px";
document.body.appendChild(inpFld);
inpFld.select();
document.execCommand("copy");
inpFld.remove(inpFld);
}
function AccessClipboardData() {
try {
window.clipboardData.setData('text', "Access Restricted");
} catch (err) {
}
}
setInterval("AccessClipboardData()", 300);body {
background-color: #00FF00;
}<html>
<head>
<title>Disable Print Screen</title>
</head>
<body>
<h2>Print screen is disabled</h2>
<p>Click anywhere on green background and try to "print screen" the content (and then see the result in Paint or simulair software)
</body>
</html>点击此处获取原始代码
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