去除移动端alert/confirm的网址(url)

时间：2024-12-07 16:35:14

移动端的alert、confirm都会显示来源的url，影响体验
下面的代码将alert和confirm重写了一遍，可去除url
 参考了网上代码，完善了confirm不同状态跳转
 
示例代码：

     <!DOCTYPE html>

    <html>

    <head>

    <meta charset="utf-8">

    <title>文档标题</title>

    </head>  

    <body>

    <script type="text/javascript">

    /*remove url of alert/confirm*/

    var wAlert = window.alert;

    window.alert = function (message) {

        try {

            var iframe = document.createElement("IFRAME");

            iframe.style.display = "none";

            iframe.setAttribute("src", 'data:text/plain,');

            document.documentElement.appendChild(iframe);

            var alertFrame = window.frames[0];

            var iwindow = alertFrame.window;

            if (iwindow == undefined) {

                iwindow = alertFrame.contentWindow;

            }

            iwindow.alert(message);

            iframe.parentNode.removeChild(iframe);

        }

        catch (exc) {

            return wAlert(message);

        }

    }

    var wConfirm = window.confirm;

    window.confirm = function (message) {

        try {

            var iframe = document.createElement("IFRAME");

            iframe.style.display = "none";

            iframe.setAttribute("src", 'data:text/plain,');

            document.documentElement.appendChild(iframe);

            var alertFrame = window.frames[0];

            var iwindow = alertFrame.window;

            if (iwindow == undefined) {

                iwindow = alertFrame.contentWindow;

            }

            var result=iwindow.confirm(message);

            iframe.parentNode.removeChild(iframe);

            return result;

        }

        catch (exc) {

            return wConfirm(message);

        }

    }   

    var r=confirm("Press a button");

    if (r==true)

    {

        document.write("You pressed OK!");

    }

    else

    {

        document.write("You pressed Cancel!");

    }

    </script>  

    </body>  

    </html>

相关文章