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，就像很多网站底部声明一样，几乎是一个摆设，大家也看开了。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; szhulian.com";

selection.selectAllChildren(newdiv);

window.setTimeout(function () { body_element.removeChild(newdiv); }, 200);

});