refresh

问题 I have a page action.php on which I run an SQL query through the code, so that whenever the page is viewed the query runs like its like counting page views <?php mysqli_query("UPDATE ****"); ?> The problem is when the page is refreshed, the query is run & PAGE REFRESH is counted as a PAGE VIEW which I want to avoid. Question: How to avoid it ? What I am looking for is a simple solution so that I can check if( page was refresh ) //some condition { do } 回答1: I found this snippet here, and it

问题 This is a very basic question - but I haven't been able to find an answer by searching online. I am using python to control ArcGIS, and I have a simple python script, that calls some pre-written code. However, when I make a change to the pre-written code, it does not appear to result in any change. I import this module, and have tried refreshing it, but nothing happens. I've even moved the file it calls to another location, and the script still works fine. One thing I did yesterday was I

问题 I have a <div> that holds a google ad. My website is mostly AJAX and there is no need for a browser refresh. That means my ads will not refresh either, which isn't ideal, a user staring at one ad all day. So I wanted a way to refresh a particular <div> on a page. I found many solutions but they didn't work. For example, using JQuery's html function: $("#ads").html("google ad script here"); This managed to refresh the whole page no idea how. I can also make an AJAX request to a HTML page that

问题 My Page structure is: <app-header></app-header> <router-outlet></router-outlet> <app-footer></app-footer> How can I update/refresh the app-header component, without refreshing the whole page? I want to hide a "Sign-In" link in the header, once the user had successfully logged in. The header is common in all the components/routes. 回答1: You can use a BehaviorSubject for communicating within different components throughout the app. You can define a data sharing service containing the

问题 My Page structure is: <app-header></app-header> <router-outlet></router-outlet> <app-footer></app-footer> How can I update/refresh the app-header component, without refreshing the whole page? I want to hide a "Sign-In" link in the header, once the user had successfully logged in. The header is common in all the components/routes. 回答1: You can use a BehaviorSubject for communicating within different components throughout the app. You can define a data sharing service containing the

问题 I have to stream a webcam video, so I use ustream to do that, which generate a flash embed code for me, and I have a button to turn off/on the light, but when I press the button it refresh the whole page and so the flash component. There's some way to not refresh the page and still send to command ? Well for now it's this way: <h:form id="form_supervisory"> <h:panelGrid> <h:column> <iframe width="480" height="296" src="http://www.ustream.tv/embed/9599890" scrolling="no" frameborder="0" style=

问题 I have an ASP.Net questionnaire application that resubmits data to the same page, showing a different question each time. There are BACK and NEXT buttons to navigate between questions. I would like to detect when the form is submitted due to a browser refresh vs. one of the buttons being pressed. I came across a WebForms approach but don't know how to apply those principals in an MVC 2 application since page events aren't available (as far as I know... I'm pretty new to Microsoft's MVC model)

问题 I want to learn how to learn how to create some charts with jfreechart and googlefor some examples. but I couldn't find what I need. This here is good http://www.java2s.com/Code/Java/Chart/CatalogChart.htm but doesn't have a refreshing graph with new displayed values. I would like to redraw a chart every nth seconds because I update an external dile witha set of values I want to display here. So how do I tell jfreechart to refresh the drawn graph and display it onthe canvas? Thanks in advance

问题 how to prevent f5 resubmitting php page? i very tired, i want prevent f5 ! i tried very much of solutions but all solutions is invalid! please help me i tried header('Location: index.php'); but not working! if you can help me, please edit my php code and paste your code.. My form code in index.php file: <form id="uploadedfile" enctype="multipart/form-data" action="upload.php" method="POST"> <input name="uploadedfile" type="file" /> <input type="submit" value="upload" id="submit" name="submit"

问题 I've got a DataGrid in my WPF/C# app that is bound to an Entity Framework collection. Each row has bound columns that change very frequently - many times per second. This causes the column to basically be unreadable because it changes so often. How can I force WPF to only show a new value every .5 seconds or 1 second even if the value changes every .1 second? e.g. dataGrid.MaxRefreshRate = 1000; (value in milliseconds). 回答1: I think you need to create a layer between your data and the