Node.js

Demonstrates how to Handle Large Integers in JSON

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Demonstrates how to handle large integers in JSON. (Integers larger than what can fit in a 32-bit signed integer.) Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  Let's say your JSON has this:

    //  {
    //  	"id": 20000000001234567
    //  }

    var json = new chilkat.JsonObject();

    success = json.LoadFile("qa_data/json/large_int.json");
    if (success == false) {
        console.log(json.LastErrorText);
        return;
    }

    //  The integer is too large for a 32-bit signed integer that is returned by IntOf.
    //  The result will be something that wrapped around and could be negative.
    //  In this case it would be: -543893881
    var id = json.IntOf("id");
    console.log("id: " + id);

    //  The solution is to read the integer value as a string, and then use the features in your programming language
    //  to convert from a string to a 64-bit integer.
    //  
    //  Alternatively, you may wish to simply hold the value as a string.  If, for example, the integer simply references
    //  an order ID, an account ID, etc., then there's no need to convert to an integer value.  You're not going to be doing
    //  mathematical operations on it anyway.  This is usually the case for large integers -- they typically exist
    //  in JSON as an account ID.

    //  You can get any JSON value as a string:
    var accountId = json.StringOf("id");
    console.log("accountId: " + accountId);

    //  Sample output:

    //  id: -543893881
    //  accountId: 20000000001234567

}

chilkatExample();