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    Math.SQRT1_2

    Summary

    The Math.SQRT1_2 property represents the square root of 1/2 which is approximately 0.707:

    Math.SQRT1_2=12=120.707\mathtt{\mi{Math.SQRT1_2}} = \sqrt{\frac{1}{2}} = \frac{1}{\sqrt{2}} \approx 0.707

    Property attributes of Math.SQRT1_2
    Writable no
    Enumerable no
    Configurable no

    Description

    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

    Example: Using Math.SQRT1_2

    The following function returns 1 over the square root of 2:

    function getRoot1_2() {
      return Math.SQRT1_2;
    }
    
    getRoot1_2(); // 0.7071067811865476
    

    Specifications

    Specification Status Comment
    ECMAScript 1st Edition. Standard Initial definition. Implemented in JavaScript 1.0.
    ECMAScript 5.1 (ECMA-262)
    The definition of 'Math.SQRT1_2' in that specification.
    Standard  
    ECMAScript 6 (ECMA-262)
    The definition of 'Math.SQRT1_2' in that specification.
    Draft  

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
    Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

    See also

    Document Tags and Contributors

    Last updated by: Mingun,