python - Extracting arguments of JavaScript function from HTML page with BeautifulSoup -

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i'm parsing html page several script blocks:

<script type="text/javascript">     // code </script> <script type="text/javascript">     foo(arg1, arg2);     // code </script>

i need extract arguments of foo function - 'arg1' , 'arg2'. can obtain inner content of script tag:

def parse_foo(pagecontent):     soup = beautifulsoup(pagecontent)     scripttags = soup.find_all('script')     script in scripttags:         tagcontent = script.get_text()         if tagcontent.count('foo') > 0:             return tagcontent     return ''

is there way arguments using beautifulsoup or should use regular expression?

pyesprima port of esprima, "a high performance, standard-compliant ecmascript parser written in ecmascript". fortunately, it's easy use. unfortunately, it's bit slow.

there's online parser tool use: http://esprima.org/demo/parse.html

when input foo(arg1,arg2);, comes back:

{     "type": "program",     "body": [         {             "type": "expressionstatement",             "expression": {                 "type": "callexpression",                 "callee": {                     "type": "identifier",                     "name": "foo"                 },                 "arguments": [                     {                         "type": "identifier",                         "name": "arg1"                     },                     {                         "type": "identifier",                         "name": "arg2"                     }                 ]             }         }     ] }

tree:

                expressionstatement                         |                    expression                  /      |     \ type=callexpression   callee   arguments                         |                            name=foo
  1. look expressionstatement expression.callee.name called "foo".
  2. return expressionstatement's arguments.raw (you need provide "raw" option true, see docs)

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