The `Number.NEGATIVE_INFINITY`

static data property represents the negative Infinity value.

The `Number.NEGATIVE_INFINITY`

static data property represents the negative Infinity value.

The same as the negative value of the global `Infinity`

property.

Property attributes of `Number.NEGATIVE_INFINITY`
| |
---|---|

Writable | no |

Enumerable | no |

Configurable | no |

The `Number.NEGATIVE_INFINITY`

value behaves slightly differently than mathematical infinity:

- Any positive value, including
`POSITIVE_INFINITY`

, multiplied by`NEGATIVE_INFINITY`

is`NEGATIVE_INFINITY`

. - Any negative value, including
`NEGATIVE_INFINITY`

, multiplied by`NEGATIVE_INFINITY`

is`POSITIVE_INFINITY`

. - Any positive value divided by
`NEGATIVE_INFINITY`

is negative zero (as defined in IEEE 754). - Any negative value divided by
`NEGATIVE_INFINITY`

is positive zero (as defined in IEEE 754). - Zero multiplied by
`NEGATIVE_INFINITY`

is`NaN`

. -
`NaN`

multiplied by`NEGATIVE_INFINITY`

is`NaN`

. -
`NEGATIVE_INFINITY`

, divided by any negative value except`NEGATIVE_INFINITY`

, is`POSITIVE_INFINITY`

. -
`NEGATIVE_INFINITY`

, divided by any positive value except`POSITIVE_INFINITY`

, is`NEGATIVE_INFINITY`

. -
`NEGATIVE_INFINITY`

, divided by either`NEGATIVE_INFINITY`

or`POSITIVE_INFINITY`

, is`NaN`

. -
`x > Number.NEGATIVE_INFINITY`

is true for any number*x*that isn't`NEGATIVE_INFINITY`

.

You might use the `Number.NEGATIVE_INFINITY`

property to indicate an error condition that returns a finite number in case of success. Note, however, that `NaN`

would be more appropriate in such a case.

Because `NEGATIVE_INFINITY`

is a static property of `Number`

, you always use it as `Number.NEGATIVE_INFINITY`

, rather than as a property of a number value.

In the following example, the variable `smallNumber`

is assigned a value that is smaller than the minimum value. When the `if`

statement executes, `smallNumber`

has the value `-Infinity`

, so `smallNumber`

is set to a more manageable value before continuing.

js

let smallNumber = -Number.MAX_VALUE * 2; if (smallNumber === Number.NEGATIVE_INFINITY) { smallNumber = returnFinite(); }

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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/NEGATIVE_INFINITY