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Q1318 Is there a way of screen scrapping the information on a html page, using JavaScript?
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Q1318 Is there a way of screen scrapping the information on a html page, using JavaScript?
In Internet Explorer use:
<iframe frameborder=0 width="0" height="0" marginheight=0 marginwidth=0 NAME="iframe" scrolling=no src="page_to_be_scrapped.htm"></iframe>
<script language="JavaScript"><!--
if (window.frames.length > 0) {
alert(window.frames['iframe'].document.body.innerHTML);
}
//--></script>
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In Netscape Navigator go to
http://jshelper.pharlap.com
and follow instructions for the server side assists:
<html>
<head>
<title></title>
<script language="JavaScript" src="http://jshelper.pharlap.com/netutils/httpget.js?http://www.nytimes.com/"></script>
<script language="JavaScript" type="text/javascript">
function scrapeHeadlines() {
var searchStart = "<NYT_HEADLINE>";
var searchEnd = "</NYT_HEADLINE>";
aNews=FileContents.split(searchStart);
for (i=1;i<aNews.length;i++) {
aHeadlineOnly=aNews[i].split(searchEnd);
document.write(aHeadlineOnly[0]);
}
}
//--> </script>
</head>
<body onLoad="scrapeHeadlines()">
<b><u>The headlines are:</u></b><br><br>
</body>
</html>
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or by using a signed script and LiveConnect:
<script language="JavaScript" type="text/javascript">
function fetchURL(url) {
if ((location.host == '' && url.indexOf(location.protocol) == -1) ||
url.indexOf(location.host) == -1) {
netscape.security.PrivilegeManager.enablePrivilege('UniversalConnect');
}
var dest = new java.net.URL(url);
var dis = new java.io.DataInputStream(dest.openStream());
var res = '';
while ((line = dis.readLine()) != null) {
res += line;
res += java.lang.System.getProperty('line.separator');
}
dis.close();
return res;
}
alert(fetchURL(location.href));
//--> </script>
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But it needs to be signed or otherwise trusted for locations other
than the one the script is loaded from.
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