How to automatically add Web information when content is copied

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We are copying some of the content on the page, often encountered after pasting, the following automatically more than one message, usually the Web site can be copied by the URL of the page. Use this method to remind other people to add the copyright information of the website, play a propaganda function to the website. Add information is to use a section of Javascrip code, the code to play the page code can be implemented. When the content of the Web page is copied automatically add the relevant information code of the website as follows:

<script language=javascript>
<!--
Document.body.oncopy=function () {
Event.returnvalue=false;
var t=document.selection.createrange (). text;
var s= "article Source: SEO learning trip www.seoxuexi.org";
Clipboarddata.setdata (' Text ', t+ ' \ r \ n ' +s+ ' \r\n\r\n ');
}
-->
</Script>