JavaScript 将按钮 ID 传递给 asp.net 隐藏字段

Question

正如问题所述，我遇到了一个愚蠢的问题，失败的代码如下所示:

<script type="text/javascript">
    function HISenlarge(id) {
    var parent = id;
    document.getElementById('HiddenField1').value = parent;
 }
</script>

HTML:

<button type="button"  id="kkkk" onclick="HISenlarge(this.id)"></button>
<asp:HiddenField ID="HiddenField1" runat="server" value=""/>

VB代码

 Protected Sub CommentButton_Click(sender As Object, e As EventArgs) Handles CommentButton.Click
    Dim c_id As String
    c_id = HiddenField1.Value.ToString

Answer 1

document.getElementById('HiddenField1').value = parent;

这不是 HiddenField1 的 HTML .So you should reference it by its ClientID

document.getElementById('<%=HiddenField1.ClientID %>').value= parent;