javascript to get the creation date and time of the file sent and display it in the html page ?

Fabrizio · Oct 5, 2004

I have just put a internet webcam that save every 30 seconds a picture
via ftp. I have an html file that display this picture file (the name
of the file is always the same and the webcam delete the old file when
save the new one). The problem is: The webcam don't have the option to
put automatically the date and time when the picture as take. How I
can make a simple JavaScript that get the creation date and time of
the file sent by the webcam and display it in the html page ?
Thank you in advance for your help.
If you like to see it the adress is: http://live.imagea.org

Fabrizio

McKirahan · Oct 5, 2004

Fabrizio said:
I have just put a internet webcam that save every 30 seconds a picture
via ftp. I have an html file that display this picture file (the name
of the file is always the same and the webcam delete the old file when
save the new one). The problem is: The webcam don't have the option to
put automatically the date and time when the picture as take. How I
can make a simple JavaScript that get the creation date and time of
the file sent by the webcam and display it in the html page ?
Thank you in advance for your help.
If you like to see it the adress is: http://live.imagea.org

Fabrizio

Will this help? Watch for word-wrap.

This renames "foto.jpg" to "ccyymmddhhnnss_.foto.jpg".

<html>
<head>
<title>foto.htm</title>
<script type="text/javascript">
var dir = "C:\\Temp\\";
var pix = "foto.gif";
var fso = new ActiveXObject("Scripting.FileSystemObject");
if (fso.FileExists(dir+pix)) {
var now = new Date();
var ymd = now.getFullYear();
ymd += ((now.getMonth()+101)+"").substr(1,2);
ymd += ((now.getDate()+100)+"").substr(1,2);
ymd += ((now.getHours()+100)+"").substr(1,2);
ymd += ((now.getMinutes()+100)+"").substr(1,2);
ymd += ((now.getSeconds()+100)+"").substr(1,2);
var sav = ymd + "_" + pix;
document.write(dir+sav);
fso.MoveFile(dir+pix, dir+sav);
}
</script>
</head>
<body>
</body>
</html>

Note that an ActiveX security warning will be issued.

Dr John Stockton · Oct 5, 2004

JRS: In article <E2z8d.335366$Fg5.101771@attbi_s53>, dated Tue, 5 Oct
2004 15:26:28, seen in McKirahan

var now = new Date();
var ymd = now.getFullYear();
ymd += ((now.getMonth()+101)+"").substr(1,2);
ymd += ((now.getDate()+100)+"").substr(1,2);
ymd += ((now.getHours()+100)+"").substr(1,2);
ymd += ((now.getMinutes()+100)+"").substr(1,2);
ymd += ((now.getSeconds()+100)+"").substr(1,2);

That looks like a translation of some half-baked code found in a
VBScript newsgroup.

Each line implements a function here often called LZ.

Testing in MSIE4 :
In VBScript, adding 100 and decapitating is the fastest way I know.
In javascript, it is not; my usual way is 40% faster.

with (new Date())
S = ((((getFullYear()*100 + getMonth()+1)*100 + getDate())*100 +
getHours())*100 + getMinutes())*100 + getSeconds()

does the same job rather more simply, if S is then used as a string by
concatenation.

However, the job that it does seems only loosely related to what the OP
asked for.

The WebCam continuously updates a file of fixed name, and it is that
name by which it will be fetched. Fabrizio wants to display when that
file was last modified. A search of the newsgroup FAQ for Last,
Modified, or both would have helped. But see sig line 3 below :
it leads to <URL:http://www.merlyn.demon.co.uk/js-date2.htm#lM>. 2.

ISTM that Fabrizio need only display the lastModified information
discussed there; either the raw string or the string corrected to
international format.

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javascript to get the creation date and time of the file sent and display it in the html page ?

Fabrizio

McKirahan

Dr John Stockton

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