Disable Copying on a website

Question

I know that it\'s impossible to thwart the world\'s most advanced minds, but I\'d like to put the slightest of barriers on my website to keep my students from copying text from

Answer 1

A simple and valid solution - bind to the 'copy' event and prevent it. You can also set what text will be copied (and later pasted by the user).

document.addEventListener('copy', function (e){
    e.preventDefault();
    e.clipboardData.setData("text/plain", "Do not copy this site's content!");
})

Answer 2

Just add the following code right before closing </HEAD> tag of your web page:

<script>
    function killCopy(e){
        return false;
    }
    function reEnable(){
        return true;
    }
    document.onselectstart=new Function ("return false");
    if (window.sidebar){
        document.onmousedown=killCopy;
        document.onclick=reEnable;
    }
</script>