Keys have been included in the JSON data stored within a variable

When making an AJAX call from my application to send a JSON message, I include the following variable:

json_msg = {"object":"page", 
            "entry":[
                {"id":"317614815243036",
                  "time":1473615625653, 
                   "messaging":[
                              {"sender":{id":"1142389195826076"},
                               "recipient":{"id":"317614815243036"},        
                               "timestamp":1473615625498, 
                                "message":{
                                            "mid":"mid.1473615625491:99adedcab35dd94768", 
                                            "seq":4741, 
                                            "text":"Hey"
                                           }
                                }]
                }
             ]
          }

However, when I check console.log(json_msg), I notice that there are additional "0" keys added like this:

json_msg = {"object":"page", 
                "entry":[
                    0:{"id":"317614815243036", // A ZERO ADDED HERE
                      "time":1473615625653, 
                       "messaging":[
                                 0: {"sender":{id":"1142389195826076"}, // A ZERO ADDED HERE
                                   "recipient":{"id":"317614815243036"},        
                                   "timestamp":1473615625498, 
                                    "message":{
                                                "mid":"mid.1473615625491:99adedcab35dd94768", 
                                                "seq":4741, 
                                                "text":"Hey"
                                               }
                                    }]
                    }
                 ]
              }

After investigating by commenting out the call and just logging the variable, it seems like these extra "0" keys appear right after assigning the variable.

I am struggling to pinpoint the root of this seemingly simple mistake.

Answer №1

When using console.log, the output is not in JSON format.

Instead, it displays the indexes of the array elements, which is standard behavior.

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