夺命雷公狗jquery---5可见选择器

<!DOCTYPE html>

<html>

    <head>

        <meta charset="utf-8">

        <title></title>

        <script src="js/jquery.js"></script>

        <script>

            window.onload = function(){

                document.getElementById('btnok').onclick = function(){

                    //1.显示所有异常元素

                    //$('div:hidden').show(3000);

                    //2.隐藏所有可见元素

                    $('div:visible').hide(3000);

                }

            }

        </script>

    </head>

    <body>

        <input type="button" id="btnok" value="匹配">

        <hr>

        <div style="width:300px; height:300px; background-color:red; display:none;"></div>

        <div style="width:300px; height:300px; background-color:red; "></div>

    </body>

</html>