Hi ahmadsubuhanl...,

Refer below article.

Search GridView with Paging on TextBox KeyPress using jQuery in ASP.Net

In the procedure GetCustomers_Pager you need to add all columns in the where clause like below.

ALTER PROCEDURE [GetCustomers_Pager]
       @SearchTerm VARCHAR(100) = ''
      ,@PageIndex INT = 1
      ,@PageSize INT = 10
      ,@RecordCount INT OUTPUT
AS
BEGIN
      SET NOCOUNT ON;
      SELECT ROW_NUMBER() OVER
      (
            ORDER BY [CustomerID] ASC
      )AS RowNumber
      ,[CustomerID]
      ,[CompanyName]
      ,[ContactName]
      ,[City]
      INTO #Results
      FROM [Customers]
      WHERE [ContactName] LIKE @SearchTerm + '%' 
	  OR [CompanyName] LIKE @SearchTerm + '%' 
	  OR [CustomerID] LIKE @SearchTerm + '%' 
	  OR @SearchTerm = ''
      SELECT @RecordCount = COUNT(*)
      FROM #Results
          
      SELECT * FROM #Results
      WHERE RowNumber BETWEEN(@PageIndex -1) * @PageSize + 1 AND(((@PageIndex -1) * @PageSize + 1) + @PageSize) - 1
    
      DROP TABLE #Results
END

In JavaScript you can check this. But with paging it is not applicable.

Filter (Search) HTML Table based on TextBox value on Button Click in JavaScript