Sometimes, we want to get the first item from a map with JavaScript.
In this article, we’ll look at how to get the first item from a map with JavaScript.
How to get the first item from a map with JavaScript?
To get the first item from a map with JavaScript, we can use the next method.
For instance, we write
const m = new Map();
m.set("key1", {});
m.set("keyN", {});
console.log(m.entries().next().value);
to create the map m.
Then we get an iterator with the key and value with entries.
And we call next to get the first entry.
We get its key value pair from the value property.
Also, we can get an iterator with the keys with keys.
console.log(m.keys().next().value);
And, we can get an iterator with the values with values.
console.log(m.values().next().value);
Conclusion
To get the first item from a map with JavaScript, we can use the next method.
