Best way of handling string response from soap web service call in node.js

Question

Newbie question here. I am calling a making a web service call in node.js using node-soap and getting a response similar to the following:

{ AuthenticateResult:
   { PrimaryKeyId: '0',
     ValidateOnly: false,
     OperationResult: 'Succeeded',
     SessionId: 'abc45235435345' } }

What is the best way to extract the SessionId value from the response if OperationResult is 'Succeeded'? I am guessing I could do it with indexof and substring, but even to newbie like me, this doesn't sound like a nice solution.

Answer 1

Assuming the input is stored as a string, and is consistent (i.e. JSON without the quotes to the left of the colon), you can just use a regex to convert it into a JSON string, then use JSON.parse().

var input = "{ AuthenticateResult: {\n"
            + "PrimaryKeyId: '0',\n"
            + "ValidateOnly: false,\n"
            + "OperationResult: 'Succeeded',\n"
            + "SessionId: 'abc45235435345' } }";

// This replaces word: with "word": and ' with "
var json = input.replace(/(\w+):/g, '"$1":').replace(/'/g, '"');

// This here's the object you want
var obj = JSON.parse(json);

// Just printing out the JSON so you know it works.
document.getElementById('result').innerHTML = json;

<pre id="result"></pre>