V8 (JavaScript engine)

V8 (JavaScript engine)
Google V8 JavaScript Engine
V8 JavaScript engine logo.png
Developer(s) Google
Stable release 3.7.8[1] / November 17, 2011; 2 days ago (2011-11-17)
Development status Active
Written in C++, JavaScript, Assembly
Operating system Microsoft Windows, Mac OS X, Linux, FreeBSD, Android, webOS
Platform x86, x86-64, ARM
Type JavaScript engine
License BSD license
Website http://code.google.com/p/v8/

The Google V8 JavaScript Engine is an open source JavaScript engine developed by Google and ships with the Google Chrome web browser.[2] Lars Bak is the head programmer.[3]

V8 increases performance by compiling JavaScript to native machine code before executing it, rather than to execute bytecode or interpreting it. Further performance increases are achieved by employing optimization techniques such as inline caching. With these features, JavaScript applications running within V8 are said to have an effective speed comparable to a compiled binary.[citation needed]



The garbage collector of V8 is a generational stop-the-world collector.[4]

The V8 assembler is based on the Strongtalk assembler.[5]


On 7th December 2010, a new compilation infrastructure called Crankshaft was introduced, with speed improvements.[6]

See also


External links