JS: Converting an Integer to a String using HTML

One can obtain an array of property names by using
getOwnPropertyNames(), an array of property values by using Object.values(), and a 2-dimensional array of names and values by using Object.entries(). If one wishes to use .map() on an object, they should first convert the object into an array. Additionally, it should be noted that .length should not be used on objects, as it is meant for counting characters in a string or the length of an array. If one needs to use .length on an object, they can push the objects to a new array. For more information, refer to the JavaScript Array length Property.


Solution 1:

In JavaScript, property names are always strings and can take on various forms. Hence, there is no uniqueness attached to keys that resemble integers. Therefore, it is advisable to handle such keys as you would with any other object.

Utilizing

Object.keys()

will generate an array containing property names, while implementing

Object.values()

will produce an array consisting of property values. For obtaining a 2-dimensional array of both names and values, use

Object.entries()

.

Object.entries(data).forEach(([key, value]) => console.log(`${key} added on ${value.added}`);


Solution 2:


Instead of attempting to access .map() from an object, you should convert your object into an array.

const data = {
    342227492064425: {
        added: "2020-10-04T23:02:28.030432",
        listed: "2020-10-04T23:02:28.030432",
        subscribed: "2020-10-04T23:02:28.030432",
    },
    342731155590705: {
        added: "2020-10-04T23:02:28.030432",
        listed: "2020-10-04T23:02:28.030432",
        subscribed: "2020-10-04T23:02:28.030432",
    },
};
//create the array which will hold all the values of the object
const data_array = [];
//loop through the object keys and store their values in data_array
for (let key of Object.keys(data)) {
    data_array.push(data[key]);
}
//now data_array[0].subscribed is accessible
console.log(data_array[0].subscribed);
//map() is also accessible
data_array.map((item) => {
    /* logic */
});


Solution 3:


The usage of

data.length

is not applicable in Objects, as it is meant for counting characters in strings or array length.

An integer value that signifies the count of elements present in the array object.

The subject in question is the length property of JavaScript Arrays.

If you require the usage of

data.length

, I propose an idea to you – simply add your objects to a fresh array.

There is many ways to do this e.g.

    var data = [];
var objects = {"342227492064425":
    {"added":"2020-10-04T23:02:28.030432",
     "listed":"2020-10-04T23:02:28.030432",
     "subscribed":"2020-10-04T23:02:28.030432"},
"342731155590705":
    {"added":"2020-10-04T23:02:28.030432",
     "listed":"2020-10-04T23:02:28.030432",
     "subscribed":"2020-10-04T23:02:28.030432"}
}
// Convert Objects to Array via forEach function and Push method
Object.entries(objects).forEach((key, value) => data.push(key));

Array Values:

console.log(data);

Output:

/*
["342227492064425", {added: "2020-10-04T23:02:28.030432", listed: "2020-10-04T23:02:28.030432", subscribed: "2020-10-04T23:02:28.030432"}],
["342731155590705", {added: "2020-10-04T23:02:28.030432", listed: "2020-10-04T23:02:28.030432", subscribed: "2020-10-04T23:02:28.030432"}]
*/

First ID Value

console.log(data[0][0])

Second ID Value

console.log(data[1][0])

Access First Object Values

console.log(data[0][1].added)
console.log(data[0][1].listed)
console.log(data[0][1].subscribed)

Access Second Object Values

console.log(data[1][1].added)
console.log(data[1][1].listed)
console.log(data[1][1].subscribed)

Utilizing

data.length

will generate an

(2)

result.

An instance that is currently active can be found on Codepen.io.

Frequently Asked Questions