Question

在图片中单击我编写用于调用java的代码

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
        <title>New Page 1</title>
    </head>
    <body>
        <table cellpadding="0" cellspacing="0" width="311">
            <tr>
                <td height="14">
                    <img onclick ="SignIn();" border="0" src="../images/Sign_In.gif" width="80" height="28">
                </td>
            </tr>
        </table>
        <script type="text/javascript" language="JavaScript">
            function SignIn(){
                alert();
            }
        </script>
    </body>
</html>

以上代码在Internet Explorer中正常运行，但在FireFox中运行不正常。有什么问题？

Answer 1

试试这个：

{ alert(); document.getElementById('FormSignIn').submit(); }

文档：document.getElementById

Answer 2

您需要将参数传递给警报。当IE显示空白警报时，似乎firefox不喜欢它。

alert("text here");

Answer 3

以下是使用javascript验证网络表单时应始终执行的操作的示例：

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
        <title>New Page 1</title>
    <!-- Inline javacript should be always inside header tag -->
    <script type="text/javascript">
    function SignIn(){
        alert("");//In firefox you have to pass something to alert to make it work


        //More code logic you can put here

        //...
        //If everything is ok return TRUE to
        //post data to "somepage.aspx" if
        // dont return FALSE and do nothin
        if(everythingIsOk);
            return true;
        else
            return false;   
    }
    </script>
    </head>
    <body>
        <form method="post" action="somepage.aspx">
            <table cellpadding="0" cellspacing="0" width="311">
                <tr>
                    <td height="14">
                        <input type="image" src="../images/Sign_In.gif" width="80" height="28" onclick="return SignIn();">
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>

Answer 4

我现在遇到了这个问题。通过清理firefox中的缓存修复： 工具＆gt;选项＆gt;高级＆gt;网络＆gt;离线存储（缓存）：“立即清除”

Javascript代码在Firefox中不起作用

4 个答案: