The Math.abs()
static method returns the absolute value of a number.
The Math.abs()
static method returns the absolute value of a number.
Math.abs(x)
x
A number.
The absolute value of x
. If x
is negative (including -0
), returns -x
. Otherwise, returns x
. The result is therefore always a positive number or 0
.
Because abs()
is a static method of Math
, you always use it as Math.abs()
, rather than as a method of a Math
object you created (Math
is not a constructor).
Math.abs(-Infinity); // Infinity Math.abs(-1); // 1 Math.abs(-0); // 0 Math.abs(0); // 0 Math.abs(1); // 1 Math.abs(Infinity); // Infinity
Math.abs()
coerces its parameter to a number. Non-coercible values will become NaN
, making Math.abs()
also return NaN
.
Math.abs("-1"); // 1 Math.abs(-2); // 2 Math.abs(null); // 0 Math.abs(""); // 0 Math.abs([]); // 0 Math.abs([2]); // 2 Math.abs([1, 2]); // NaN Math.abs({}); // NaN Math.abs("string"); // NaN Math.abs(); // NaN
Specification |
---|
ECMAScript Language Specification # sec-math.abs |
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | ||
abs |
1 | 12 | 1 | 3 | 1 | 18 | 4 | 10.1 | 1 | 1.0 | 4.4 | 1.0 | 0.10.0 |
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/abs