I'm trying to read the data from my json with below format but it results with undefined
My JSON as below
{
"1": "A",
"2": "B",
"3": "C",
"4": "D",
"5": "E",
"6": "F",
"key":"pair"
}
I'm parsing as below
rawdata = fs.readFileSync('data.json');
data = JSON.parse(rawdata);
console.log(data.1) //returns undefined. I tried parsing 1 to String but resulted same.
console.log(data.key) //returns pair
You can't use dot notation to access an object's property if that property's name starts with a number.
To get a the property you'll need to use square bracket notation:
let o = JSON.parse(`{
"1": "A",
"2": "B",
"3": "C",
"4": "D",
"5": "E",
"6": "F",
"key":"pair"
}`);
console.log(o['1']);In case of dot notation to access a value, the property key must be a valid identifier
In this code, property must be a valid JavaScript identifier, i.e. a sequence of alphanumerical characters, also including the underscore ("_") and dollar sign ("$"), that cannot start with a number. For example, object.$1 is valid, while object.1 is not.
You can use bracket notation in this case
obj['1']
Spec: Property Accessors
You can try using rawdata = fs.readFileSync('./data.json');
This tells the script the data.json file is in the same folder as it.
And then use .data['1'] to get the value.
[]notation to get values in an object likedata["1"]