How do I refresh the current page? With JS you will be omnipotent.
1,reload method that forces the browser to refresh the current page.
Syntax: Location.reload ([Bforceget])
Parameters: Bforceget, optional parameter, default to False, take the current page from the client cache. True to get the latest page from the service, equivalent to the client-click F5 ("Refresh")
The 2,replace method, which replaces the currently cached item in history (the client) by specifying a URL, so after you use the Replace method, you cannot access the URL that has been replaced by "forward" and "back".
Syntax: Location.replace (URL)
Usually used: Location.reload () or History.go (0).
This method is similar to the client Point F5 Refresh page, so when the page method= "POST", a "page expiration" prompt appears.
Because the session security protection mechanism.
When the Location.reload () method is invoked, the ASPX page already exists in the server memory at this time, and therefore must be IsPostback.
If you have this application: you need to reload the page, which means that the desired page can be recreated on the server side, expecting not to be IsPostback.
Here, Location.replace () can complete this task. The replaced pages are regenerated each time on the server side.
Code: Location.replace (LOCATION.HREF);
Go back and refresh the page:
Location.replace (Document.referrer);
Document.referrer//URL of previous page
Do not use History.go (-1), or history.back (), to return and refresh the page, both of which do not refresh the page.
Report:
JavaScript refreshes the page in several ways:
Copy Code code as follows:
1,history.go (0)
2,location.reload ()
3,location=location
4,location.assign (location)
5,document.execcommand (' Refresh ')
6,window.navigate (location)
7,location.replace (location)
8,document. Url=location.href
Ways to automatically refresh pages:
1, Page automatically refresh: Add the following code into the
Copy Code code as follows:
<meta http-equiv= "Refresh" content= ">"
20 of which means that the page is refreshed every 20 seconds.
2, page automatic jump: Add the following code into the
Copy Code code as follows:
<meta http-equiv= "Refresh" content= "20;url=http://www.jb51.net" >
20 of which refers to 20 seconds after the jump to the Http://www.jb51.net page
3, the page automatically refresh JS version
Copy Code code as follows:
<script language= "JavaScript" >
function Myrefresh ()
{
Window.location.reload ();
}
SetTimeout (' Myrefresh () ', 1000); Specify 1 seconds to refresh once
</script>
4,JS script statement to refresh frame
Copy Code code as follows:
Refresh the page that contains the frame with
<script language=javascript>
Parent.location.reload ();
</script>
child window refreshes parent window
<script language=javascript>
Self.opener.location.reload ();
</script>
(or <a href= "javascript:opener.location.reload ()" > Refresh </a>)
The page that refreshes another frame is used
<script language=javascript>
Parent. Another FrameID.location.reload ();
</script>
If you are refreshing when you want to close a window or when you want to open windows, call the following statement in <body>.
Copy Code code as follows:
<body onload= "Opener.location.reload ()" > Refresh when opening windows
<body onunload= "Opener.location.reload ()" > Refresh when closed
<script language= "JavaScript" >
Window.opener.document.location.reload ()
</script>
First, let's look at a simple example:
The following three pages are named Frame.html, top.html, bottom.html as examples to specify how to do.
Frame.html consists of two pages (bottom.html) on top (top.html) with the following code:
Copy Code code as follows:
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" >
<HTML>
<HEAD>
<TITLE> Frame </TITLE>
</HEAD>
<frameset rows= "50%,50%" >
<frame name=top src= "top.html" >
<frame name=bottom src= "bottom.html" >
</frameset>
</HTML>
Now assume that top.html (that is, the page above) has seven button to achieve the bottom.html (that is, the following page) of the refresh, you can use the following seven kinds of statements, which easy to do with their own.
The code for the Top.html page is as follows:
Copy Code code as follows:
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" >
<HTML>
<HEAD>
<TITLE> top.html </TITLE>
</HEAD>
<BODY>
<input Type=button value= "Refresh 1" onclick= "Window.parent.frames[1].location.reload ()" ><br>
<input Type=button value= "Refresh 2" onclick= "Window.parent.frames.bottom.location.reload ()" ><br>
<input Type=button value= "Refresh 3" onclick= "window.parent.frames[' Bottom '].location.reload ' ()" ><br>
<input Type=button value= "Refresh 4" onclick= "Window.parent.frames.item (1). Location.reload ()" ><br>
<input Type=button value= "Refresh 5" onclick= "Window.parent.frames.item (' Bottom '). Location.reload ()" ><br>
<input Type=button value= "Refresh 6" onclick= "Window.parent.bottom.location.reload ()" ><br>
<input Type=button value= "Refresh 7" onclick= "window.parent[' Bottom '].location.reload ' ()" ><br>
</BODY>
</HTML>
The following is the bottom.html page source code, in order to prove that the bottom page is indeed refreshed, after loading the page pop-up a dialog box.
Copy Code code as follows:
<! DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 transitional//en" >
<HTML>
<HEAD>
<TITLE> bottom.html </TITLE>
</HEAD>
<body onload= "alert (' I was loaded!") ') ' >
</BODY>
</HTML>
Explain:
Copy Code code as follows:
1.window refers to the current page, for example, for this example, it refers to the top.html page.
2.parent refers to the parent page of the current page, which is the frame page that contains it. For example, for this example, it refers to framedemo.html.
3.frames is a Window object and is an array. Represents all the subpages within the frame.
4.item is the method. Returns the elements inside an array.
5. If the child page is also a frames page, inside or other sub pages, then some of the above methods may not work.
Report:
JavaScript refreshes the page in several ways:
1 history.go (0)
2 Location.reload ()
3 location=location
4 Location.assign (location)
5 Document.execcommand (' Refresh ')
6 Window.navigate (location)
7 Location.replace (location)
8 document. Url=location.href
Second, automatically refresh the page
1. Page Automatic refresh: Add the following code to the <meta http-equiv= "Refresh" content= ">"
20 of which means that the page is refreshed every 20 seconds.
2. Page Automatic Jump: Add the following code to the <meta http-equiv= "Refresh" content= "20;url=http://www.jb51.net" >
20 of which refers to 20 seconds after the jump to the Http://www.jb51.net page
3. Page automatically refresh JS version
<script language= "JavaScript" > Function Myrefresh () {window.location.reload (); } settimeout (' Myrefresh () ', 1000); Specify 1 seconds to refresh once </script>
[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform]
Third, Java in the Write Servler,action program, to operate the return page (such as talking about the window, after the operation is completed, close the current page, refresh the parent page)
Copy Code code as follows:
1 PrintWriter out = Response.getwriter ();
2 Out.write ("<script type=\" text/javascript\ ">");
3////child window Refresh parent window
4 Out.write ("Self.opener.location.reload ();");
5//Close window
6 Out.write ("window.opener=null;");
7 Out.write ("Window.close ();");
8 Out.write ("</script>");
Four, JS refresh frame script statement
1. How to refresh the page that contains the frame
Copy Code code as follows:
<script language=javascript>
Parent.location.reload ();
</script>
2. child window Refresh parent window
Copy Code code as follows:
<script language=javascript>
Self.opener.location.reload ();
</script>
3. How to refresh the page of another frame (illustrated by the example above)
Copy Code code as follows:
Statement 1. Window.parent.frames[1].location.reload ();
Statement 2. Window.parent.frames.bottom.location.reload ();
Statement 3. window.parent.frames["Bottom"].location.reload ();
Statement 4. Window.parent.frames.item (1). Location.reload ();
Statement 5. Window.parent.frames.item (' Bottom '). Location.reload ();
Statement 6. Window.parent.bottom.location.reload ();
Statement 7. window.parent[' Bottom '].location.reload ();
4. If you want to close the window or refresh when you want to open windows, call the following statement in <body>.
<body onload= "Opener.location.reload ()" >
Refresh when opening windows
<body onunload= "Opener.location.reload ()" >
Refresh at shutdown
Copy Code code as follows:
<script language= "JavaScript" >
Window.opener.document.location.reload ()
</script>
