# Basic Data Use

Now that we have a functional Enmap structure (which we'll always refer to as myEnmap), we're ready to start writing data to it, and getting data from it.

The code samples on this page assume that you have correctly initialized myEnmap

In terms of Enmap, "writing", "adding" and "editing" data is essentially the same thing. When using the basic set() method, if the key does not exist it's created, and if it does, it's modified.

Enmap supports pretty much all native JavaScript data types. However, it cannot support Class Instances directly. That means if you have, say, a "User" object or a "House" class, they cannot be stored here.

There is however a workaround, which is to use Serializing and Deserializing.

Objects and Arrays are a little more complex to deal with, so they have their own page. See Working with Objects for more information.

The usage for the set() method is simple:

<Enmap>.set(key, value);

• key must be a string or integer. A key should be unique, otherwise it will be overwritten by new values using the same key.
• value must be a supported native data type as mentioned above.

Here are a few examples of writing simple data values:

myEnmap.set('boolean', true);
myEnmap.set('integer', 42);
myEnmap.set('someFloat', 73.2345871);
myEnmap.set("Test2", "test2");

Getting data back from an Enmap is just as simple as writing to it. All you need is the key of what you want to retrieve, and you get its value back!

const floatValue = myEnmap.get('someFloat');
const test = myEnmap.get('Test2');

// you can even use booleans in conditions: 
if(myEnmap.get('boolean')) {
  // boolean is true!
}

That's pretty much it for only retrieving a single data value. There are more complex operations that are available, take a look at Array Methods for the more advanced things you can do on Enmap's data!

Removing data from Enmap is as simple as saving or retrieving. You can easily use the delete() method as such:

myEnmap.delete("integer");

myEnmap.delete("boolean");