Error in JSON format detected in cross-origin request

My code snippet:

$.getJSON('http://../id=1397391950253&callback=?', null, function (results) {
            alert('Successfully achieved a cross domain JS call');
});

The result obtained is as follows: 

{
    "data": [{
        "shiftY": 0,
        "regType": "FAS",
        "fuelVolume": 2373,
        "eventDate": 166625019,
        "gsmOn": true,
        "bigIconHeight": 21,
        "speed": 17,
        "roamingOn": false,
        "direction": 134,            
        "latitude": 54.8658849,
        "bigShiftY": 0,
        "iconHeight": 28,
        "useDiscreteOutput": false
    }],
    "reportDescriptor": {
        "reportTypeID": 2,
        "objectTypes": ",FAS,FTC",
        "dependencyType": "vehicle"
    }
}

However, I encountered an error in Chrome that says "Uncaught SyntaxError: Unexpected token : rtmap:1". What could be the issue with the result?

javascriptjsonrest

Answer №1

Performing a cross domain request can be achieved through either JSONP or CORS.

It is recommended to utilize JSONP, where the returned result should be wrapped in a function named callback (Note that the function name can be customized by modifying the query parameter callback in the request, for example: &callback=myCustomCallback). Your server response should follow this format:

callback({
    "data": [{
        "shiftY": 0,
        "regType": "FAS",
        "fuelVolume": 2373,
        "eventDate": 166625019,
        "gsmOn": true,
        "bigIconHeight": 21,
        "speed": 17,
        "roamingOn": false,
        "direction": 134,   
        "latitude": 54.8658849,
        "bigShiftY": 0,
        "iconHeight": 28,
        "useDiscreteOutput": false
    }],
    "reportDescriptor": {
        "reportTypeID": 2,
        "objectTypes": ",FAS,FTC",
        "dependencyType": "vehicle"
    }
})

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