小编eir*_*jel的帖子

我试图在特定的字符串中插入其他字符.

function sample(x) {
            if (x.value.length > 2 && x.value.length < 5) { 
                var first = x.value.substring(0, 2) + "'";
                var second = x.value.substring(2, x.value.length) + "''";
                x.value = first + "" + second ; }           
}

<input id="txt" type="text" placeholder="onkeypress" onkeypress="sample(this)" value="" /><br />
<input id="txt1" type="text" placeholder="onchange" onchange="sample(this)" value="" />

通过onchange在htmlinput中使用属性,代码运行完美.但这也可以用onkeypress属性运行吗？如果输入值为1006,则结果应为10'06''.救命.谢谢.

我有一个像这样的gridview.它绑定在数据源中.现在,我需要隐藏其行没有可用数据的列.在下面的表示例中,应该隐藏具有"2ND"作为HeaderText的列,因为它没有数据.

Protected Sub grdsf_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles grdsf.DataBound
        Dim rowscount As Integer = grdsf.Rows.Count
        Dim columnscount As Integer = grdsf.Columns.Count
        Dim k As Integer = 0
        For j As Integer = 1 To columnscount - 1 Step j + 1
            For i As Integer = 0 To rowscount - 1 step i + 1
                Dim x As String = grdsf.Rows(i).Cells(j).Text
                If x = String.Empty Then
                    k = k + 1
                End If
            Next
            Dim col …