[英]how to call javascript from code behind in asp.net?
我的页面中有Java脚本,我想从功能后面的vb.net代码中调用它,并且不想调用它(onload或onclick或任何类似的事件),但是我想从执行looping.so的函数中调用它它将运行一次以上
您需要这样做:
' Define the name and type of the client scripts on the page.
Dim csname1 As [String] = "PopupScript"
Dim cstype As Type = Me.[GetType]()
' Get a ClientScriptManager reference from the Page class.
Dim cs As ClientScriptManager = Page.ClientScript
' Check to see if the startup script is already registered.
If Not cs.IsStartupScriptRegistered(cstype, csname1) Then
Dim cstext1 As New StringBuilder()
cstext1.Append("<script type=text/javascript> getval('elementid') </") 'Your javascript function
cstext1.Append("script>")
cs.RegisterStartupScript(cstype, csname1, cstext1.ToString())
End If
使用SignalR实际上可以做到这一点。
https://github.com/SignalR/SignalR
很酷的东西。
持久的连接听起来像您想要的那样。
https://github.com/SignalR/SignalR/wiki/PersistentConnection
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