Question

我的网站上有多个HTML5视频和声音元素。我已经为媒体使用自定义控件，所以我实现了一些javascript / jQuery。

使用单一媒体，控制部分工作正常！如果我在我的网站上显示多个单一媒体，则控件不再有效。

我认为有些javascript是重叠的。这是我的代码：

USE [Test]
GO

IF EXISTS(SELECT * FROM sys.objects WHERE Name = 'Person_Permissions' AND Type = 'U')
DROP TABLE [dbo].[Person_Permissions]
GO


SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

--Creating a table to test this out
CREATE TABLE [dbo].[Person_Permissions](
    [ID] [int] IDENTITY(1,1) NOT NULL,
    [FirstName] [varchar](50) NULL,
    [LastName] [varchar](50) NULL,
    [UserName] [varchar](50) NULL,
    [Department] [varchar](50) NULL
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

--Setting some null data
INSERT INTO [dbo].[Person_Permissions](FirstName,LastName,UserName,Department)
VALUES('Joe','Smith','JSmith',null)
GO


DECLARE @TempColumns TABLE
(
ID int IDENTITY(1,1),
ColumnName varchar(100)
)

INSERT INTO @TempColumns
 SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS
    WHERE TABLE_NAME = 'Person_Permissions'

DECLARE @Idx int = (select count(*) from @TempColumns)    
DECLARE @ColumnNameSelect varchar(max) = ''

WHILE @Idx > 0
BEGIN

DECLARE @ColumnName varchar(100) = (select ColumnName  from @TempColumns where ID = @Idx)
DECLARE @ValueLength int    
DECLARE @ParmDefinition nvarchar(500) = N'@ValueLengthOUT int OUTPUT';
--using a sub query to check length of all values if null make it zero
DECLARE @Sql nvarchar(max) = ('SELECT @ValueLengthOUT=ISNULL(SUM(A.ValueLength),0) FROM (SELECT LEN([' + @ColumnName + ']) ValueLength FROM [dbo].[Person_Permissions]) AS A' )

exec sp_executesql @Sql, @ParmDefinition, @ValueLengthOUT=@ValueLength OUTPUT;

--if there is a value for the column use that column in our select
IF (@ValueLength > 0)
BEGIN
 SET @ColumnNameSelect = @ColumnNameSelect + @ColumnName + ','
END

SET @Idx = @Idx - 1
END

DECLARE @cmd varchar(max)= 'SELECT ' + (SELECT LEFT(@ColumnNameSelect, LEN(@ColumnNameSelect) -1)) + ' FROM [Person_Permissions]'

EXEC (@cmd)

有没有办法重建脚本以便我可以使用多个媒体元素？

多个HTML5媒体元素 - 控制

0 个答案: