How can I refresh a page using JavaScript or HTML?
240
votes
First entire PAGE of google with your question gives you the answer.
- stefan
question like this should be closed. users should be encouraged to do such a simple search first, encourage to read..
- amosrivera
@amosrivera - Indicated by the ratio of upvotes to downvotes on this question, there is a silent majority of users who very much appreciate being able to find answers to questions like this on Stackoverflow
- Chris Dutrow
@stefan: Thankfully, Google brought me (and thousands of others) here -- to find the best answers.
- Brent Bradburn
Sadly, when you googgle for "auto refreshing a page via js" this one is the first page which appears, so not answering here is kinda pointless :)
- Alar
8 Answers
319
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262
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Here are 535 ways to reload a page using javascript, very cool:
Here are the first 20:
location = location
location = location.href
location = window.location
location = self.location
location = window.location.href
location = self.location.href
location = location['href']
location = window['location']
location = window['location'].href
location = window['location']['href']
location = window.location['href']
location = self['location']
location = self['location'].href
location = self['location']['href']
location = self.location['href']
location.assign(location)
location.replace(location)
window.location.assign(location)
window.location.replace(location)
self.location.assign(location)
and the last 10:
self['location']['replace'](self.location['href'])
location.reload()
location['reload']()
window.location.reload()
window['location'].reload()
window.location['reload']()
window['location']['reload']()
self.location.reload()
self['location'].reload()
self.location['reload']()
self['location']['reload']()
79
votes
15
votes
11
votes
2
votes
If it has something to do control updates on cached pages here I have a nice method how to do this.
- add some javascript to the page that always get the versionnumber of the page as a string (ajax) at loading. for example:
www.yoursite.com/page/about?getVer=1&__[date] - Compare it to the stored versionnumber (stored in cookie or localStorage) if user has visited the page once, otherwise store it directly.
- If version is not the same as local version, refresh the page using window.location.reload(true)
- You will see any changes made on the page.
This method requires at least one request even when no request is needed because it already exists in the local browser cache. But the overhead is less comparing to using no cache at all (to be sure the page will show the right updated content). This requires just a few bytes for each page request instead of all content for each page.
IMPORTANT: The version info request must be implemented on your server otherwise it will return the whole page.
Example of version string returned by www.yoursite.com/page/about?getVer=1&__[date]:
skg2pl-v8kqb
To give you an example in code, here is a part of my library (I don't think you can use it but maybe it gives you some idea how to do it):
o.gCheckDocVersion = function() // Because of the hard caching method, check document for changes with ajax
{
var sUrl = o.getQuerylessUrl(window.location.href),
sDocVer = o.gGetData( sUrl, false );
o.ajaxRequest({ url:sUrl+'?getVer=1&'+o.uniqueId(), cache:0, dataType:'text' },
function(sVer)
{
if( typeof sVer == 'string' && sVer.length )
{
var bReload = (( typeof sDocVer == 'string' ) && sDocVer != sVer );
if( bReload || !sDocVer )
{
o.gSetData( sUrl, sVer );
sDocVer = o.gGetData( sUrl, false );
if( bReload && ( typeof sDocVer != 'string' || sDocVer != sVer ))
{ bReload = false; }
}
if( bReload )
{ // Hard refresh page contents
window.location.reload(true); }
}
}, false, false );
};
If you are using version independent resources like javascript or css files, add versionnumbers (implemented with a url rewrite and not with a query because they mostly won't be cached). For example: www.yoursite.com/ver-01/about.js
For me, this method is working great, maybe it can help you too.
