Introduction to the usage of a link refresh page and js refresh page-JS Tutorial-php.cn

Introduction to the usage of a link refresh page and js refresh page

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Release： 2018-03-02 13:21:51

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Refreshing the page usually uses a link and js refresh. As for the difference between the two in use, there will be a detailed introduction in the following article. I hope it can help everyone.

1.a Link usage operation:

<a href="javascript:history.go(-1);">返回上一页</a>   
<a href="#top">刷新当前页</a>

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#top has no effect on me. It works. I directly wrote refresh the current page but it works.

2. How to refresh the current page with JS

reload method , this method forces the browser to refresh the current page.
Syntax: location.reload([bForceGet])
Parameters: bForceGet, optional parameter, default is false, retrieve the current page from the client cache. true, then use GET method to fetch the latest page from the server, which is equivalent to the client clicking F5 ("Refresh")
replace method, which replaces the item currently cached in the history (client) by specifying the URL. Therefore, after using the replace method, you cannot access the replaced URL through "forward" and "back".
Syntax: location.replace(URL)
In actual application, when refreshing the page, we usually use: location.reload() or history.go(0) to do it. Because this approach is like the client clicking F5 to refresh the page, so when the page's method="post" is used, a "webpage expired" prompt will appear. That's because of Session's security protection mechanism. You can think of: When the location.reload() method is called, the aspx page already exists in the server memory, so it must be IsPostback. If there is such an application: We need to reload the page, which means we expect the page to be re-created on the server side, and we expect Not IsPostback. Here, location.replace() can accomplish this task. The replaced page is regenerated on the server every time.
You can write like this: location.replace(location.href);
Return and refresh the page:

location.replace(document.referrer);   
document.referrer //前一个页面的URL

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Don’t use history.go( -1), or history.back(); to return and refresh the page. These two methods will not refresh the page.
Attachment:
Several ways to refresh the page using Javascript:

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

Methods to automatically refresh the page:
1. Automatically refresh the page: Add the following code to the area

20 refers to refreshing the page every 20 seconds.

2. Automatic page jump: add the following code to the area

The 20 finger will jump to the http://www.wyxg.com page after 20 seconds
3. The page automatically refreshes js Version

<script language="JavaScript">   
function myrefresh()   
{   
window.location.reload();   
}   
setTimeout(&#39;myrefresh()&#39;,1000); //指定1秒刷新一次   
</script>

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JS refresh frame script statement

//如何刷新包含该框架的页面用   
<script language=JavaScript>   
parent.location.reload();   
</script>   
//子窗口刷新父窗口   
<script language=JavaScript>   
self.opener.location.reload();   
</script>   
(　或　<a href="javascript:opener.location.reload()">刷新</a> )   
//如何刷新另一个框架的页面用   
<script language=JavaScript>   
parent.另一FrameID.location.reload();   
</script>

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If you want If you want to refresh when the window is closed or want to refresh when the window is opened, just call the following statement in .

<body onload="opener.location.reload()"> 开窗时刷新   
<body onUnload="opener.location.reload()"> 关闭时刷新   
<script language="javascript">   
window.opener.document.location.reload()   
</script>

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