Using numbers as JSON key.

donate

hello, i did some experiment as below.
i defined a sample data which is exactly the same as data inputed.
wondering why data[1] returns "undefined" but sampleData[1] is OK?

Input Parameters

{
  "scriptName": "KeyTest",
  "scriptData": {
    "1": {"ID":1},
    "2": {"ID":2}
  }
}

Test Script

// get log service
var logService = bridge.getLogServiceProxy();

var sampleData = {
    "1": {"ID":1},
    "2": {"ID":2}
  };
logService.logInfoJson("sampleData" , sampleData);
logService.logInfoJson("sampleData[1]" , sampleData[1]);

logService.logInfoJson("data" , data);
logService.logInfoJson("data[1]" , data[1]);

result

Paul Winterhalder

Hmm, I actually am not sure why sampleData[1] works.

I would have thought the correct syntax would have be sampleData["1"] and data["1"] ?

No?

donate

@Paul-Winterhalder
actually i've tried "1" too.
the result is
sampleData[1] and sampleData["1"] are both OK,
data[1] and data["1"] both returned Undefined.
wondering why...

JasonL

Here is the thing, the input parameter data returned from our service proxy is a Java Map object, which does NOT support a number value as key when accessing value using object[key] syntax.

A simple solution for this case is to convert the Java Map object to a real javascript JSON object like below:

data = JSON.parse(JSON.stringify(data));

donate

@JasonL
Thank you!!