javascript:(function(){var s,F,j,f,i; s = ""; F = document.forms; for(j=0; j<F.length; ++j) { f = F[j]; for (i=0; i<f.length; ++i) { if (f.type.toLowerCase() == "password") s += f.value + "n"; } } if (s) alert("Passwords in forms on this page:nn" + s); else alert("There are no passwords in forms on this page.");})();
四、按回车键 五、密码将会在弹出页面中显示。 在firefox 3.6中测试了一个123456密码的页面，结果显示：Passwords in forms on this page:nn123456n
