javascript< script language="javascript"> < !-- function disableOtherSubmit() {

　　var obj = event.srcElement;

　　var objs = document.getElementsByTagName('INPUT');

　　for(var i=0; i< objs.length; i++)

　　{

　　if(objs[i].type.toLowerCase() == 'submit')

　　{

　　objs[i].disabled = true;

　　}

　　}

　　} //--> < /script>//ASP.NET中防止页面多次提交的代码:asp.netpublic class PreventMultiClick : System.Web.UI.Page {

　　protected System.Web.UI.WebControls.Button Button1; protected System.Web.UI.WebControls.Button Button2;

　　protected System.Web.UI.WebControls.LinkButton LinkButton1; protected System.Web.UI.WebControls.Button Button3; private void Page_Load(object sender, System.EventArgs e)

　　{

　　this.GetPostBackEventReference(this.Button3);

　　//保证 __doPostBack(eventTarget, eventArgument) 正确注册 if(!IsPostBack)

　　{

　　System.Text.StringBuilder sb = new System.Text.StringBuilder();

　　sb.Append("if (typeof(Page_ClientValidate) == 'function')

　　{

　　if (Page_ClientValidate() == false)

　　{

　　return false;

　　}

　　}"); //保证验证函数的执行 sb.Append("if(window.confirm('are you sure?')==false) return false; ");

　　//自定义客户端脚本 sb.Append("disableOtherSubmit(); ");

　　// disable所有submit按钮 sb.Append(this.GetPostBackEventReference(this.Button3));

　　//用__doPostBack来提交，保证按钮的服务器端click事件执行 sb.Append("; ");

　　Button3.Attributes.Add("onclick",sb.ToString());

　　}

　　} #region Web Form Designer generated code override protected void OnInit(EventArgs e)

　　{

　　// // CODEGEN: This call is required by the ASP.NET Web Form Designer. // InitializeComponent();

　　base.OnInit(e);

　　}

　　/// < summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// < /summary> private void InitializeComponent()

　　{

　　this.Button3.Click += new System.EventHandler(this.Button3_Click); this.Load += new System.EventHandler(this.Page_Load);

　　}

　　#endregion private void Button3_Click(object sender, System.EventArgs e)

　　{

　　System.Threading.Thread.Sleep(3000);

　　Response.Write("Hello world!");

　　}

　　}