parsing html text with regex in javascript? -

i realize html can not parsed regex. however, have string source code typical amazon web page.

            <script type="text/javascript">                 p.when("a", "jquery").execute(function(a, $) {                     var pagestate = a.state('ftpagestate');                     if (typeof pagestate === 'undefined') {                         pagestate = {};                     }                     if (pagestate["fast-track-message"]) {                         pagestate["fast-track-message"].stoptimer();                     }          <li> 48 pages</li>                      pagestate["fast-track-message"] = new fasttrackcountdown(20710,"fast-track-message");                     a.state('ftpagestate', pagestate);                 });             </script> 

i want grab 48. every number followed pages</li> how can match this?

attempt

var string_tester = string(datastuff.html()); var regex_tester = string_tester.match(/\d+ pages<\/li>/); 

if know in list element, try this: (<li>\s*)([0-9]+)(\s*pages\s*</li>) (48 in $2. however, won't accommodate number formatting. should generic enough: (<li>\s*)([0-9,\.\-\(\)]+)(\s*pages\s*</li>). should note amazon has seller , publisher api might provide more stable route pursue depending on use case.

edit: checked few amazon pages see if there better approach getting want , noticed pages checked there no number, this:

                <script type="text/javascript">                 p.when("a", "jquery").execute(function(a, $) {                     var pagestate = a.state('ftpagestate');                     if (typeof pagestate === 'undefined') {                         pagestate = {};                     }                     if (pagestate["fast-track-message"]) {                         pagestate["fast-track-message"].stoptimer();                     }                     pagestate["fast-track-message"] = new fasttrackcountdown(57592,"fast-track-message");                     a.state('ftpagestate', pagestate);                 });             </script> 

i don't know doing, wanted mention in case invalidates assumption have made.