Re: Iconize weather info and something else

[Ray v. B. <r_v...@ho...>]

Kristian,

I've started doing some experiments with Javascript and php, but then I 
realized that I did things in the wrong order. It is important to know that 
php is executed first on the server, that results in a page that is 
'executed' in the browser. I think that this construction is of no use: the 
page loads only in the browser when the php script has received the metar 
data.

I reread Kristians suggestion and I think you mean this:

It should be possible to have a webpage (nr-1) that contains:
- a text 'Retrieving data...' with some id/name (dhtml-tag) in that
  part.
- some javascript. When this page has been loaded, the javascript
  executes. The javascript should then generate a new 'page' (nr-2).
  This nr-2 page contains php script that retrieves the metar data.
  The nr-2 page comes to the browser only when the metar data has
  been received and processed. The nr-2 page contains javascript
  (outputted by the php) that sets a javascript metar-variable.
- some other javascript that cyclicly tests metar-variable. Once
  set, it updates the 'Retrieving data...' text via the id/name tag
  and closes the nr-2 page. This same script can check for timeouts:
  When the page nr-2 does not come (while the php does not execute, or
  the noaa server cannot be found, or whatever), the nr-1 page cyclic
  javascript can terminate the second page and display something like
  'Metar data not found...'. I think that is what Martin meant.

Some Javascript questions though:
- is it possible to have two webpages (one started by the other) from
  which a Javascript can access data from the other?
- If inter-webpage communication via Javascript is not possible,
  maybe the same could be accomplished by frames in stead of pages?

I am willing to try this, but let me know if the above is correct...

Greetz,

Ray


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