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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

π™ΌπšŠπšπš‘.πš‚πš€πšπšƒπŸ·_𝟸 = 1 2 β‰ˆ 0.707 \mathtt{\mi{Math.SQRT1_2}} = \sqrt{\frac{1}{2}} \approx 0.707

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

Browser compatibility

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
SQRT1_2 1 12 1 3 1 18 4 10.1 1 1.0 4.4 1.0 0.10.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/SQRT1_2