js复制内容加版权声明代码

当别人复制你的文章内容时,会在文章末尾自动添加一个版权声明。网络版权意识薄弱,这个是君子做法,如果真要抄你的文章,声明再多都没用,就像我的网站底部声明一样,几乎是一个摆设,我也看开了。文章保留所有权利,如果你复制我的文章,没有按照我的声明,说不定哪天我心情好,就会找你聊聊天了……

$("body").on('copy', function (e) {
	if (typeof window.getSelection == "undefined") return; //IE8 or earlier...
	
	var body_element = document.getElementsByTagName('body')[0];
	var selection = window.getSelection();
	
	//if the selection is short let's not annoy our users
	if (("" + selection).length < 30) return;

	//create a div outside of the visible area
	//and fill it with the selected text
	var newdiv = document.createElement('div');
	newdiv.style.position = 'absolute';
	newdiv.style.left = '-99999px';
	body_element.appendChild(newdiv);
	newdiv.appendChild(selection.getRangeAt(0).cloneContents());
	
	//we need a <pre> tag workaround
	//otherwise the text inside "pre" loses all the line breaks!
	if (selection.getRangeAt(0).commonAncestorContainer.nodeName == "PRE") {
		newdiv.innerHTML = "<pre>" + newdiv.innerHTML + "</pre>";
	}
	
	newdiv.innerHTML += "<br /><br />原文: <a href='"
	+ document.location.href + "'>"
	+ document.location.href + "</a> &copy; caibaojian.com";
			
	selection.selectAllChildren(newdiv);
	window.setTimeout(function () { body_element.removeChild(newdiv); }, 200);
});

代码来源

原创文章:js复制内容加版权声明代码 ,未经许可,禁止转载,©版权所有
原文出处:前端开发博客 (http://caibaojian.com/js-copy-with-copyright.html)
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