HTML Passing Values between pages in different locations
Question
I am needing to open an html page on server-A and grab some values from server-B's webpage. In other words I want to display server-B's webpage values on server-A's webpage.
The webpage (server-B) data I need the values from is being populated by a source that I do not have access. The values are written into what appears to be a variable that looks like this: [[0]]. When the page is accessed that value [[0]] is populated with current data.
I have unsuccessfully tried to attach a label to the [[0]] to allow reading from server-A with a form post and get methods.
What should my approach be to move this data in [[0]] to server-A webpage?
Server-B page:
<html>
<!-- Head information for the page including page title -->
<head>
<title>Test</title>
</head>
<body color=#FFFFFF>
<!-- Start of your page body -->
<!-- This code displays the current tag value for index 0
[[0]] will be replaced by the tag value a the time the page is loaded -->
The value of the tag with index 0 is [[0]]
<!-- Added code to store [[0]] in div -->
<div class="pink-box" id="thatDiv">[[0]]</div>
</body>
</html>
I added this html/javascript for Server-A and I am getting the an error described with COR:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Get Div</title>
<style>
body {
font-size: 12px;
font-family: Arial;
}
</style>
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<b>Div:</b>
<ol id="Result"></ol>
<script>
$("#Result").load("http://192.168.1.168/user/default.html #thatDiv");
</script>
</body>
</html>
2 answers
solution1
0 2014-07-23 19:04:42
You can get the contents of the HTML file and find the starting "[[" and the ending "]]" and grab the data in between.
<?php
$serverBFile = "http://www.serverB.com/file.html";
$serverBHTML = file_get_contents($serverBFile);
$serverBStart = stripos($serverBHTML,"[[");
$serverBEnd = stripos($serverBHTML,"]]");
$serverBLength = $serverBEnd - $serverBStart;
$serverBValue = substr($serverBHTML, $serverBStart, $serverBLength);
?>
solution2
0 2014-07-23 19:06:01
The way that I have done this in the past is using DOM parsing tools like jQuery.
If you have access to a node.js server, you can use the jQuery plugin to load up server-B's webpage and then query something that's constant with the desired tag, be it ID, classname, tagname, location, etc.
<html>
<!-- Head information for the page including page title -->
<head>
<title>Test</title>
</head>
<body color=#FFFFFF>
<!-- Start of your page body -->
<!-- This code displays the current tag value for index 0
[[0]] will be replaced by the tag value a the time the page is loaded
let's say [[0]] becomes a <div>-->
<div class="pink-box" id="thatDiv">data I want</div>
</body>
</html>
From here, it's fairly easy to extract the text via $('#thatDiv').text() or $('.pink-box').text() .
This is a fairly simple solution. Once you get that value into a variable in your node server, just expose a REST call that your server-a webpage can make an AJAX request to.
The reason I say to use node is because it seems that this page has dynamic content that must be loaded with JavaScript. If I knew more about how this page interacted, I would be able to give more specific solutions to your problem,
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