C # foreground js calls background code and background code calls foreground js

 

C # foreground js calls the background code

Front-end js

<script type="text/javascript" language="javascript">

　　function Ceshi()

　　{

　　　　var a = "<%=Getstr()%>";

　　　　alert(a);

　　}

</script>

<Input type = "button" onclick = "Ceshi ();" value = "js call background code"/>

Background code

public string Getstr()

{

String aa = "Hello! ";

　　return aa;

}

C # Call the front-end js code in the background

Front-end js

<script type="text/javascript" language="javascript">

　　function Ceshi()

　　{

Var a = "Hello! "

　　　　alert(a);

　　}

</script>

<Asp: Button ID = "Button1" runat = "server" Text = "background call js"

onclick="Button1_Click" />

Background code

Protected void button#click (object sender, EventArgs e)
{
// Use the following code to call frontend js if UpdatePanel exists:
ScriptManager. RegisterStartupScript (UpdatePanel1,
This. Page. GetType (), "", "Ceshi ();", true );
// If not, use the following code:
This. Page. ClientScript. RegisterStartupScript (this. Page. GetType (),"",
"<Script> Ceshi (); </script>", true );
}