What is the best way to determine the total number of elements within this JSON data structure?

Is there a way to determine the number of elements in a JSON object using JavaScript?

data = 
{
    name_data: {
        35: {
            name: "AA",
        },
        47: {
            name: "BB",
        },
        48: {
            name: "CC",
        },
        49: {
            name: "DD",
        }
    }
}

It seems like the code data.name_data.length is not working as expected and returns undefined. How can we correctly retrieve the number of elements in this JSON object using JavaScript?

javascriptjson

Answer №1

To find the length of an object, you can utilize the Object.keys method:

 Object.keys(data).length; // will output 1
 Object.keys(data.name_data).length; // will display 4

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