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Numbers can be integers or floating point. There are not separate types for these, we can simply give numeric values to any variables.

```
12
-24
-123.45
-12.34E-5
1.e2
```

Remember that E (or e) means "times 10 to the power of".

Range: +/- `Number.MIN_VALUE`

.. `Number.MAX_VALUE`

(approx +/- 5.0E-324 .. 1.79E+308)

Accuracy: 64-bit IEEE-754 standard, giving just over 19 decimal digits. (See the ECMAScript standard for precise details.)

If the result of an operation which should yield a number cannot be represented as a number, the variable gets special value `Number.NaN`

(not a number). As a shorthand you can code that simply as `NaN`

.

There are also special values `Number.NEGATIVE_INFINITY`

and `Number.POSITIVE_INFINITY`

and again there are shorthand notations: `+Infinity`

and `-Infinity`

.

Note that all of this is platform-independent: an advantage over some other languages.

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