The Number.NEGATIVE_INFINITY
property represents the negative Infinity value.
Property attributes of Number.NEGATIVE_INFINITY
| |
---|---|
Writable | no |
Enumerable | no |
Configurable | no |
The value of Number.NEGATIVE_INFINITY
is the same as the negative value of the global object's Infinity
property.
This value behaves slightly differently than mathematical infinity:
POSITIVE_INFINITY
, multiplied by NEGATIVE_INFINITY
is NEGATIVE_INFINITY
.NEGATIVE_INFINITY
, multiplied by NEGATIVE_INFINITY
is POSITIVE_INFINITY
.NEGATIVE_INFINITY
is negativezero.NEGATIVE_INFINITY
is positive zero.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
.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 isFinite
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
object you created.
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.
var smallNumber = (-Number.MAX_VALUE) * 2; if (smallNumber === Number.NEGATIVE_INFINITY) { smallNumber = returnFinite(); }
Specification |
---|
ECMAScript (ECMA-262) The definition of 'Number.NEGATIVE_INFINITY' in that specification. |
Desktop | ||||||
---|---|---|---|---|---|---|
NEGATIVE_INFINITY |
1 | 12 | 1 | 4 | 3 | 1 |
Mobile | ||||||
---|---|---|---|---|---|---|
NEGATIVE_INFINITY |
1 | 18 | 4 | 10.1 | 1 | 1.0 |
Server | |
---|---|
NEGATIVE_INFINITY |
0.1.100 |
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://wiki.developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/NEGATIVE_INFINITY