calling javascript from c#
calling javascript from c#
我需要使用 javascript 函数在我的页面上显示和隐藏元素,但从 C# 方法中调用它。 这可能吗?
编辑:我尝试了RegisterStartupScript(见下文),但这并没有像我希望的那样隐藏元素:
HidePopup("CompanyHQSetup", "$('#<%=DivDataProvider.ClientID %>').hide();$('#<%=modalOverlay.ClientID %>').hide();");
private void HidePopup(string Key, string jscript)
{
string str = "";
str += "<script language='javascript'>";
str += jscript;
str += "</script>";
RegisterStartupScript(Key, jscript);
}
编辑:通过使用隐藏字段布尔值来确定是否隐藏或显示元素来解决此问题
是的,请查看 RegisterClientScriptBlock。
以下是从该链接中获取的片段:
public void Page_Load(Object sender, EventArgs e)
{
// Define the name and type of the client script on the page.
String csName = "ButtonClickScript";
Type csType = this.GetType();
// Get a ClientScriptManager reference from the Page class.
ClientScriptManager cs = Page.ClientScript;
// Check to see if the client script is already registered.
if (!cs.IsClientScriptBlockRegistered(csType, csName))
{
StringBuilder csText = new StringBuilder();
csText.Append("<script type='"text/javascript'"> function DoClick() {");
csText.Append("Form1.Message.value='Text from client script.'} </");
csText.Append("script>");
cs.RegisterClientScriptBlock(csType, csName, csText.ToString());
}
}
一个是服务器端,另一个是客户端。 它们可以相互传递变量(Javascript 到 ASP 是通过 forms/querystring/cookie 和 ASP 到 JS 通过 response.write 变量完成的),但它们不能直接交互。
您可以使用page。RegisterClientScript 方法可以按照以下网址进行操作http://msdn.microsoft.com/en-us/library/system.web.ui.page.registerclientscriptblock.aspx
并试一试
Javascript 是客户端,C# 是服务器端。你不能直接从 C# 调用 javascript。不过,看看Comet,它将向您展示如何将数据从HTTP服务器推送到网页。
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