js复制内容加版权声明代码

$("body").bind('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 />Read more at: <a href='"
+ document.location.href + "'>"
+ document.location.href + "</a> © MySite.com";

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