在 JavaScript 中，负无穷大 是一个常量值，用来表示可用数值中的最小值。这意味着没有其他数字比这个值更小。我们可以通过自定义函数或算术运算来生成它。

注意： JavaScript 将 NEGATIVE_INFINITY 值显示为 -Infinity。
负无穷大 在以下方面与数学上的无穷大有所不同：

• 负无穷大除以任何其他数字时，结果为 -0（与 0 不同）。
• 当负无穷大除以自身或正无穷大时，返回 NaN。
• 负无穷大除以任何正数（正无穷大除外）仍然是负无穷大。
• 负无穷大除以任何负数（负无穷大除外）结果是正无穷大。
• 如果我们将负无穷大与 NaN 相乘，结果将是 NaN。
• 0 和负无穷大的乘积是 NaN。
• 两个负无穷大的乘积永远是正无穷大。
• 正无穷大和负无穷大的乘积永远是负无穷大。

语法：

Number.NEGATIVE_INFINITY

示例 1：

html


“

GeeksforGeeks

What is negative infinity in JavaScript?

Generate negative infinity

function geekPositiveInfinity() {

let n = (-Number.MAX_VALUE) * 2;

document.getElementById("geek").innerHTML =

"Here the number generated is twice of negative of Number.MAX_VALUE" + "
" +

" which is lesser than lower limit" + "

" + n;

}

`

**输出：**

![image](https://media.geeksforgeeks.org/wp-content/uploads/20221209123933/Animation-of-neginfinity.gif)JavaScript 负无穷大

**示例 2：**

            HTML

    `

GeeksforGeeks

Negative infinity in JavaScript

Operations with Negative infinity

1. Divide any number by NEGATIVE_INFINITY

   561 / Number.NEGATIVE_INFINITY =

2. Divide negative infinity by itself

   Number.NEGATIVEINFINITY / Number.NEGATIVEINFINITY =

3. Negative infinity divided by any Positive number

   (except Positive infinity)

   Number.NEGATIVE_INFINITY / 123 =

4. Negative infinity divided by any Negative number

   (except Negative infinity)

   Number.NEGATIVE_INFINITY / -123 =

5. Multiply Negative Infinity by NaN

   Number.NEGATIVE_INFINITY * NaN =

6. Product of Zero and Negative infinity

   0 * Number.NEGATIVE_INFINITY =

7. Product of two Negative infinity

   Number.NEGATIVEINFINITY * Number.NEGATIVEINFINITY =

8. Product of Negative infinity and Positive infinity

   Number.NEGATIVEINFINITY * Number.POSITIVEINFINITY =

Click Here to calculate

function calc() {

document.getElementById("divide").innerHTML +=

561 / Number.NEGATIVE_INFINITY;

document.getElementById("divideSelf").innerHTML +=

Number.NEGATIVEINFINITY / Number.NEGATIVEINFINITY;

document.getElementById("dividePos").innerHTML +=

Number.NEGATIVE_INFINITY / 123;

document.getElementById("divideNeg").innerHTML +=

Number.NEGATIVE_INFINITY / -123;

document.getElementById("mulnan").innerHTML +=

Number.NEGATIVE_INFINITY * NaN;

document.getElementById("mulZero").innerHTML +=

0 * Number.NEGATIVE_INFINITY;

document.getElementById("mulSelf").innerHTML +=

Number.NEGATIVEINFINITY * Number.NEGATIVEINFINITY;

document.getElementById("mulInf").innerHTML +=

Number.NEGATIVEINFINITY * Number.POSITIVEINFINITY;

}