How to refresh the page using javascript-JS Tutorial-php.cn

How to refresh the page using javascript

青灯夜游

Release： 2023-01-04 09:34:01

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Javascript method to refresh the page: 1. Use "location.reload()"; 2. Use "location.replace(location)"; 3. Use "history.go(0)"; 4. Use "location=location" etc.

How to refresh the page using javascript

The operating environment of this tutorial: Windows 7 system, ECMAScript version 5, Dell G3 computer.

Several ways to refresh the page using Javascript:

##location.reload()
location.replace(location)
##history.go(0)
location=location
location.assign(location)
document.execCommand('Refresh')
window.navigate(location)
document.URL=location.href

1, reload method

This method forces the browser to refresh the current page.

Syntax:

location.reload([bForceGet])

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Parameters: bForceGet, optional parameter, default is false, get the current page from the client cache. true, then use GET method to get the latest page from the server, which is equivalent to the client clicking F5 ("Refresh")

2, replace method

The method 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)

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Usually use: location.reload() or history.go(0) to do it.

This method is similar to the client point F5 to refresh the page, so when the page method="post", a "webpage expired" prompt will appear. Because of Session’s security protection mechanism.

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: The page needs to be reloaded, which means that the page is expected to be re-created on the server side, and the expectation is Not IsPostback.

Here, location.replace() can complete this task. The replaced page is regenerated on the server every time.

Code:

location.replace(location.href);

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Return and refresh the page:

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

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Do not use history.go(-1), or history.back(); to return and refresh the page, These two methods will not refresh the page.

[Recommended learning:

js basic tutorial

]

Supplement: How to automatically refresh or jump the page:

1 , the page automatically refreshes: add the following code to the area

<meta http-equiv="refresh" content="20">       （其中20指每隔20秒刷新一次页面.）

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2, the page automatically jumps: add the following code to the area

<meta http-equiv="refresh" content="20;url=http://www.baidu.com"> 
（其中20指隔20秒后跳转到http://www.baidu.comt页面）

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3, the page automatically Refresh js version

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

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4, JS refresh frame script statement

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

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If you want to refresh when closing the window or refresh when opening the window, 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>
 window.opener.document.location.reload()
</script>

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For more programming related knowledge, please visit:

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