CODEWITHSUNDEEP
javascripthtmlmeta-tags
escargot agile
escargot agile

Reputation: 22379

Javascript hook on http-equiv="refresh"

I'm using the following meta header in order to download a file when a page is opened:

<meta http-equiv="refresh" content="3;URL=SomeFileName" />

Is there a way to make some javascript code run when the 3 seconds pass, i.e. just before the browser starts downloading SomeFileName?

Upvotes: 0

Views: 2886

Answers (2)

Umur Kontacı
Umur Kontacı

Reputation: 35478

While a pure javascript redirect function would be a better solution most of the time, there might be times that you need it.

Take a look at these:
http://www.w3schools.com/jsref/event_onunload.asp
Alerts when navigating away from a web page
http://msdn.microsoft.com/en-us/library/ie/ms536907(v=vs.85).aspx
https://developer.mozilla.org/en-US/docs/DOM/window.onbeforeunload

Basically, an event is fired when the user tries to close or navigate away from the page. You can hook up to that event for customization. 

window.onbeforeunload = function () {
  var who = ["lover", "friend"][(Math.floor(Math.random()*2)+1)];
  return "Goodbye my " + who;
};

This function is supposed to return a string or nothing. If it is a string, a dialog box appears for confirmation of navigating away; if it is nothing, i.e. undefined, no interception happens.

Also n ote that:

Since 25 May 2011, the HTML5 specification states that calls to window.showModalDialog(), window.alert(), window.confirm() and window.prompt() methods may be ignored during this event.

Upvotes: 1

Karl Laurentius Roos
Karl Laurentius Roos

Reputation: 4399

You can use setTimeout() to time it but as stated in the comments it's a much better to redirect with JavaScript in this case. Example:

setTimeout(function(){
    /*
     * code here will be executed before the download
     */
    document.location = "downloadurl";
}, 3000); // 3000ms = 3s

Upvotes: 1

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