How to get the size of a Map in JavaScript?

JavaScript – Get Size of Map

To get the size of a Map in JavaScript, access size property of this Map. size is a read only property of Map object and returns an integer value representing the number of key-value pairs in this Map.

Syntax

The syntax to access size property on the Map map is

map.size;

Examples

In the following example, we take a Map with two items and find the size of this Map programmatically using size property.

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The size of an empty map is zero.

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Conclusion

In this JavaScript Tutorial, we learned how to get the size of a Map in JavaScript using size property, with examples.