From http://stackoverflow.com/questions/15675352/regex-convert-xml-to-json Working XML to JSON regex function in javascript

new_gist_file

var regex = /(<\w+[^<]*?)\s+([\w-]+)="([^"]+)">/;
            while(xml.match(regex)) xml = xml.replace(regex, '<$2>$3</$2>$1>'); // For attributes

            xml = xml.replace(/\s/g, ' ').  // Finds all the white space converts to single space
                    replace(/< *\?[^>]*?\? *>/g, ''). //Finds the XML header and removes it
                    replace(/< *!--[^>]*?-- *>/g, ''). //Finds and removes all comments
                    replace(/< *(\/?) *(\w[\w-]+\b):(\w[\w-]+\b)/g, '<$1$2_$3').
                    replace(/< *(\w[\w-]+\b)([^>]*?)\/ *>/g, '< $1$2>').
                    replace(/(\w[\w-]+\b):(\w[\w-]+\b) *= *"([^>]*?)"/g, '$1_$2="$3"').
                    replace(/< *(\w[\w-]+\b)((?: *\w[\w-]+ *= *" *[^"]*?")+ *)>( *[^< ]*?\b.*?)< *\/ *\1 *>/g, '< $1$2 value="$3">').
                    //replace(/ *(\w[\w-]+\b) *= *"([^>]*?)" */g, '< $1>$2').
                    replace(/< *(\w[\w-]+\b) *</g, '<$1>< ').
                    replace(/> *>/g, '>').
                    //replace(/< *\/ *(\w[\w-]+\b) *> *< *\1 *>/g, '').  // breaks the output?
                    replace(/"/g, '\\"').
                    replace(/< *(\w[\w-]+\b) *>([^<>]*?)< *\/ *\1 *>/g, '"$1":"$2",').
                    replace(/< *(\w[\w-]+\b) *>([^<>]*?)< *\/ *\1 *>/g, '"$1":{$2},').
                    replace(/< *(\w[\w-]+\b) *>(?=.*?< \/\1\},\{)/g, '"$1":[{').
                    split(/\},\{/).
                    reverse().
                    join('},{').
                    replace(/< *\/ *(\w[\w-]+\b) *>(?=.*?"\1":\[\{)/g, '}],').
                    split(/\},\{/).
                    reverse().
                    join('},{').
                    replace(/< \/(\w[\w-]+\b)\},\{\1>/g, '},{').
                    replace(/< *(\w[\w-]+\b)[^>]*?>/g, '"$1":{').
                    replace(/< *\/ *\w[\w-]+ *>/g,'},').
                    replace(/\} *,(?= *(\}|\]))/g, '}').
                    replace(/] *,(?= *(\}|\]))/g, ']').
                    replace(/" *,(?= *(\}|\]))/g, '"').
                    replace(/ *, *$/g, '');