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Page.RegisterStartupScript(String, String) 方法

  • 参考

定义

命名空间:
System.Web.UI
程序集:
System.Web.dll

注意

The recommended alternative is ClientScript.RegisterStartupScript(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202

在页响应中发出客户端脚本块。

public:
 virtual void RegisterStartupScript(System::String ^ key, System::String ^ script);
public virtual void RegisterStartupScript (string key, string script);
[System.Obsolete("The recommended alternative is ClientScript.RegisterStartupScript(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202")]
public virtual void RegisterStartupScript (string key, string script);
abstract member RegisterStartupScript : string * string -> unit
override this.RegisterStartupScript : string * string -> unit
[<System.Obsolete("The recommended alternative is ClientScript.RegisterStartupScript(Type type, string key, string script). http://go.microsoft.com/fwlink/?linkid=14202")>]
abstract member RegisterStartupScript : string * string -> unit
override this.RegisterStartupScript : string * string -> unit
Public Overridable Sub RegisterStartupScript (key As String, script As String)

参数

key
String

标识脚本块的唯一键。

script
String

要发送到客户端的脚本的内容。

属性
ObsoleteAttribute

示例

下面的代码示例演示如何 RegisterStartupScript 将该方法与 IsStartupScriptRegistered 该方法结合使用。 如果代码声明块中编写的 ECMAScript 尚未注册，如方法确定 IsStartupScriptRegistered ，则 RegisterStartupScript 发出调用。

<%@ Page Language="C#"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
  public void Page_Load(Object sender, EventArgs e)
  {
    String csname1 = "PopupScript";
    String csname2 = "ButtonClickScript";

    if (!IsClientScriptBlockRegistered(csname1))
    {
        String cstext1 = "<script type=\"text/javascript\">" +
            "alert('Hello World');</" + "script>";
        RegisterStartupScript(csname1, cstext1);
    }

    if (!IsClientScriptBlockRegistered(csname2))
    {
      StringBuilder cstext2 = new StringBuilder();
      cstext2.Append("<script type=\"text/javascript\"> function DoClick() {");
      cstext2.Append("Form1.Message.value='Text from client script.'} </");
      cstext2.Append("script>");
      RegisterClientScriptBlock(csname2, cstext2.ToString());
    }
  }
</script>
<html  >
  <head>
    <title>RegisterClientScriptBlock Example</title>
  </head>
  <body>
     <form id="Form1"
         runat="server">
        <input type="text" id="Message" /> <input type="button" value="ClickMe" onclick="DoClick()" />
     </form>
  </body>
</html>


<%@ Page Language="VB"  %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        Dim csname1 As String = "PopupScript"

        Dim csname2 As String = "ButtonClickScript"
    
        If Not IsClientScriptBlockRegistered(csname1) Then
            Dim cstext1 As String = "<script type=""text/javascript"">" & _
                "alert('Hello World');</" & "script>"
            RegisterStartupScript(csname1, cstext1)
        End If
    
        If Not IsClientScriptBlockRegistered(csname2) Then
            Dim cstext2 As New StringBuilder()
            cstext2.Append("<script type=""text/javascript""> function DoClick() {")
            cstext2.Append("Form1.Message.value='Text from client script.'} </")
            cstext2.Append("script>")
            RegisterClientScriptBlock(csname2, cstext2.ToString())
        End If
    End Sub
</script>
<html  >
  <head>
    <title>RegisterClientScriptBlock Example</title>
  </head>
  <body>
     <form id="Form1"
         runat="server">
        <input type="text" id="Message" /> <input type="button" value="ClickMe" onclick="DoClick()" />
     </form>
  </body>
</html>

注解

与RegisterClientScriptBlock该方法类似，该方法RegisterStartupScript在对象的<form runat= server>元素的结束标记Page之前发出脚本。 请务必在参数中指定的script脚本块字符串周围包括开始和结束<script>元素。

由于此方法使用键来标识脚本块，因此每次由其他服务器控制实例请求脚本块时，不必向输出流发出脚本块

具有相同 key 参数值的任何脚本块都被视为重复项。

备注

请记住，在脚本中包含 HTML 注释标记，以便在请求浏览器不支持脚本时呈现该标记。

RegisterStartupScript 方法已弃用。 请改用 RegisterStartupScript 类中的 ClientScriptManager 方法。

适用于

另请参阅