HTML variable for URL -

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i have web page 6 streaming ip cams. part of code below:

<a target="_blank" href="http://172.28.###.##:102"><img src="http://172.28.###.##:102/videostream.cgi?user=username&pwd=password" width="400"  height="300">

when ip changes, need edit above ip times 6. i've searched kind of variable use make 1 change 6 cams.

below not work included show i'm trying do.

<head>  <script type="text/javascript"> var server = "172.28.###.##"; var url = "http://" + server + ":102/videostream.cgi?user=username&pwd=password"; </script> </head>  <body>  <a href = "<script>" url "</script>" </body>  </html>

can done? or other way?

you're on right track, you're mixing javascript html. doesn't interpret way think would:

<a href = "<script>" url "</script>"

consider html , javascript 2 separate things. build html markup, use javascript code target , modify elements within markup. example, might have html elements this:

<a id="camlink1" target="_blank" href="http://172.28.###.##:102"> <img id="camimage1" src="http://172.28.###.##:102/videostream.cgi?user=username&pwd=password" width="400" height="300">

notice id values. long values unique within entire page, can target values , update attributes on html elements. this:

document.getelementbyid("camlink1").href = "http://172.28.12.34:102";  document.getelementbyid("camimage1").src = "http://172.28.12.34:102/videostream.cgi?user=username&pwd=password";

putting together, can construct rudimentary script have different ids links/images , use single variable set them:

<script type="text/javascript">     var server = "172.28.###.##";     var url = "http://" + server + ":102/videostream.cgi?user=username&pwd=password";      document.getelementbyid("camimage1").src = url;     // , on, different elements </script>

one additional thing note here html , javascript evaluated in order in it's loaded on page, you'll want javascript code after html elements targets, otherwise getelementbyid() won't find elements you're looking for. put javascript script block @ bottom of page.

as develop code, you'll find can reduce duplication , perhaps define patterns allow more maintain without copy/paste code.


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