通过JavaScript启用控件（单选按钮） [英] Enabling control(radio button) through JavaScript
本文介绍了通过JavaScript启用控件（单选按钮）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
<head runat="server">
<title></title>
<script type="text/javascript">
function RadioClick() {
alert("Hi");
document.getElementById("FileUpload1").style.visibility = "visible";
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:RadioButton ID="rbClderFormt" runat="server" GroupName="Format"/>
<asp:RadioButton ID="rdTableFormat" runat="server" GroupName="Format"/>
<asp:RadioButton ID="rdUploadFormat" runat="server" GroupName="Format"/>
<asp:FileUpload ID="FileUpload1" runat="server" Visible="false"/>
</div>
</form>
</body>
以上i代码。当我单击rdUploadFormat radioButton时，我必须更改FileUpload1的可见性。在后端我使用以下代码
The above is the code. I have to change the visibility of "FileUpload1" When I click the rdUploadFormat radioButton. In the back end I m using the following code
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
rdUploadFormat.Attributes.Add("OnClick", "return RadioClick()");
}
}
以上不起作用。我收到警告消息，但FileUpload不可见。
The above is not working. I am getting the alert message but the FileUpload is not visible.
推荐答案
删除Visible ='false'并将style ='display：none'添加到文件上传控件如下所述：
remove Visible='false' and add style='display:none' to your file upload control as mentioned below :
<asp:fileupload id="FileUpload1" runat="server" style="display: none" xmlns:asp="#unknown" />
并更新javascript方法，如下所示：
and update javascript method as shown below :
function RadioClick() {
alert("Hi");
document.getElementById("FileUpload1").style.display = "block";
}
这篇关于通过JavaScript启用控件（单选按钮）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
查看全文
