ajax 防止用户反复提交的2种解决方案


            可在服务器端加载方法： 复制代码 代码如下: private void OnLoading() { System.Text.StringBuilder sb = new System.Text.StringBuilder(); sb.Append(" function pageLoad(){var manager = Sys.WebForms.PageRequestManager.getInstance(); "); sb.Append(" manager.add_beginRequest(OnBeginRequest); manager.add_endRequest(OnEndRequest)} var lcPostbackElementID;"); sb.Append(" function OnBeginRequest(sender, args){ lcPostbackElementID = args.get_postBackElement().id.toLowerCase(); if (lcPostbackElementID === \"btnadwords\"){$get(\"btnAdWords\").disabled = true; $get(\"btnAdWords\").value='正在提交...';}} "); sb.Append(" function OnEndRequest(sender, args){if (lcPostbackElementID === \"btnadwords\"){ $get(\"btnAdWords\").disabled = false; $get(\"btnAdWords\").value='确定';}} "); ScriptManager.RegisterStartupScript(Page, Page.GetType(), "btnAdWords", sb.ToString(), true); }  也可直接写在页面脚本里： 复制代码 代码如下: <script> function pageLoad() { var manager = Sys.WebForms.PageRequestManager.getInstance(); manager.add_beginRequest(OnBeginRequest); manager.add_endRequest(OnEndRequest) } var lcPostbackElementID; function OnBeginRequest(sender, args) { lcPostbackElementID = args.get_postBackElement().id.toLowerCase(); if (lcPostbackElementID === 'btnadwords') { $get('btnAdWords').disabled = true; $get('btnAdWords').value='正在提交...'; } } function OnEndRequest(sender, args) { if (lcPostbackElementID === \"btnadwords\") { $get('btnAdWords').disabled = false; $get('btnAdWords').value='确定'; } } < /script>  更多内容请参考：http://msdn.microsoft.com/zh-cn/magazine/cc163319.aspx