Xbasic

Helper::HtmlProcessor.ExtractTagAttributes Method

Syntax

c ExtractTagAttributes(C tagNames, C html, C format [, N limit = -1])

Arguments

tagNames: Comma separated list of tags to extract
html: Html source to scan for tags
format: Attributes to output for with separators.
limit: Optional limit (i.e. 1 means only process the first, 2 means process first 2, etc).

Description

Return list of attributes (in format) from only tags in comma separated tagname list.

In the following example, ExtractTagAttributes() is called to return the href, rel and type attributes in a cr-lf delimited list with '|||' separators between the attributes.

dim html as c = ""+http_get("www.cnn.com").body
? helper::HtmlProcessor::ExtractTagAttributes("link",html,"href|||rel|||type")
= http://www.cnn.com/|||canonical|||
http://www.cnn.com/favicon.ie9.ico|||Shortcut Icon|||image/x-icon
/tools/search/cnncom.xml|||search|||application/opensearchdescription+xml
/tools/search/cnncomvideo.xml|||search|||application/opensearchdescription+xml
http://i.cdn.turner.com/cnn/.e/img/3.0/global/misc/apple-touch-icon.png|||apple-touch-icon|||image/png
http://rss.cnn.com/rss/cnn_topstories.rss|||alternate|||application/rss+xml
http://rss.cnn.com/rss/cnn_latest.rss|||alternate|||application/rss+xml
http://edition.cnn.com|||alternate|||text/html
http://arabic.cnn.com|||alternate|||text/html
http://mexico.cnn.com|||alternate|||text/html
https://plus.google.com/u/0/b/117515799321987910349/117515799321987910349/posts|||publisher|||
http://z.cdn.turner.com/cnn/tmpl_asset/static/www_homepage/2624/css/hplib-min.css|||stylesheet|||text/css