Professional JavaScript For Web Developers

Chapter 17
oBuffer.append(“xmlns:soapenc=\”http://schemas.xmlsoap.org/soap/encoding/\” “);
oBuffer.append(“xmlns:xs=\”http://www.w3.org/2001/XMLSchema\” “);
oBuffer.append(“xmlns:xsi=\”http://www.w3.org/2001/XMLSchema-instance\”>”);
oBuffer.append(“”);
oBuffer.append(“”);
oBuffer.append(this.zipcode);
oBuffer.append(“”);
};
return oBuffer.toString();
Because the SOAP request string is so long, this method uses the StringBuffer() object created earlier
in the book to build up the string. Note that the zipcode property is used here to insert the zip code in
question instead of passing it in as an argument. If the zip code is passed in as an argument, you must
rewrite the send() method to take this into account; this way, the send() method can be used as-is.
The handleResponse() method expects to receive a SOAP response string as its only argument. Once
again, this format can be determined by using the WSDL analyzer tool from XMethods:
Despite all the extra code, the only part of interest is what is contained within the element.
The easiest way to extract that data from the string is to use a regular expression; there’s no need for
expensive DOM parsing and operations in this case (for more complicated Web services, however, that
may be an option). After the value is extracted, the parseFloat() function can be used to get the
floating-point value:
TemperatureService.prototype.handleResponse = function (sResponse) {
var oRE = /(.*)/gi;
oRE.test(sResponse);
return parseFloat(RegExp[“$1”]);
};
The only thing left to do is modify the send() method to accept an argument (the zip code) because the
zipcode property must be assigned for the method to function properly (remember, the send() method
calls buildRequest(), which uses the zipcode property to create the SOAP string).
To accomplish this, you first must create a pointer to the original send() method:
TemperatureService.prototype.webServiceSend = TemperatureService.prototype.send;
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