JavaScript stores numbers as 64 bits floating point numbers, but all bitwise operations are performed on 32 bits binary numbers. Before a bitwise operation is performed, JavaScript converts numbers to 32 bits signed integers.

After the bitwise operation is performed, the result is converted back to 64 bits JavaScript numbers. This is a zero fill left shift.

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One or more zero bits are pushed in from the right, and the leftmost bits fall off:. This is a sign preserving right shift. Copies of the leftmost bit are pushed in from the left, and the rightmost bits fall off:.

This is a zero fill right shift. One or more zero bits are pushed in from the left, and the rightmost bits fall off:. Tabs Dropdowns Accordions Convert Weights Animated Buttons Side Navigation Top Navigation JS Animations Modal Boxes Progress Bars Parallax Login Form HTML Includes Google Maps Loaders Tooltips Slideshow Filter List Sort List.

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Bitwise and Bit Shift Operators (The Java™ Tutorials > Learning the Java Language > Language Basics)

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Michal Budzynski: JavaScript: The less known parts. Bitwise Operators.

The examples above uses 4 bits unsigned binary numbers. Since JavaScript uses 32 bits signed integers, JavaScript will return Operation Result LEARN MORE Tabs Dropdowns Accordions Convert Weights Animated Buttons Side Navigation Top Navigation JS Animations Modal Boxes Progress Bars Parallax Login Form HTML Includes Google Maps Loaders Tooltips Slideshow Filter List Sort List. Your message has been sent to W3Schools. Top 10 Tutorials HTML Tutorial CSS Tutorial JavaScript Tutorial W3.

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Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using this site, you agree to have read and accepted our terms of use , cookie and privacy policy. Copyright by Refsnes Data. Shifts right by pushing copies of the leftmost bit in from the left, and let the rightmost bits fall off.