Math.SQRT1_2
The Math.SQRT1_2
static data property represents the square root of 1/2, which is approximately 0.707.
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Value
Property attributes of Math.SQRT1_2 |
|
---|---|
Writable | no |
Enumerable | no |
Configurable | no |
Description
Math.SQRT1_2
is a constant and a more performant equivalent to Math.sqrt(0.5)
.
Because SQRT1_2
is a static property of Math
, you always use it as Math.SQRT1_2
, rather than as a property of a Math
object you created (Math
is not a constructor).
Examples
Using Math.SQRT1_2
The following function returns 1 over the square root of 2:
js
function getRoot1_2() {
return Math.SQRT1_2;
}
getRoot1_2(); // 0.7071067811865476
Specifications
Specification |
---|
ECMAScript Language Specification # sec-math.sqrt1_2 |
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