The dot notation in JSON syntax allows for easy access

Recently, I've been struggling with referencing a variable in JSON dot notation within my meteor application. It seems that when trying to access respJson.userlower.name, userlower is not being recognized as a valid variable. Is there a workaround for this issue? The reason why I need userlower to be a variable is because it's passed into the function and contains the username. The JSON data I'm receiving looks like this:

{"tiandi":{"id":19888066,"name":"Tiandi","profileIconId":7,"summonerLevel":30,"revisionDate":1416925919000}}

try {
    var result = HTTP.get(url, function(err, result){
        console.log(result);
        if (result.statusCode == 200) {
            var userlower = userName.toLowerCase();
            var respJson = JSON.parse(result.content);
            console.log("response received.");
            GameList.insert({
                IGN: respJson.userlower.name,
                level: respJson.userlower.summonerlevel,
                Game: "League of Legends"
            });
        }
    });
} catch (e) {
    console.log(e);
}

Answer №1

Using square brackets to access values:

respJson[userlower].summonerlevel,

Answer №2

To access a value with a constant key that is a legal JavaScript name and not a reserved word, use the . notation.

If the key does not meet the criteria mentioned above, then utilize the [] notation instead. Since the key in this case is a variable, it is recommended to use the [] notation.

respJson[userlower].summonerlevel

For further insights on this topic, please consult "JavaScript: The Good Parts" by Douglas Crockford.

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