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This article mainly shows you "what javascript V8 refers to". The content is simple and clear. I hope it can help you solve your doubts. Let the editor lead you to study and learn this article "what does javascript V8 mean?"

Javascript v8 is an open source JavaScript engine developed by Google for use in Google Chrome and Chromium; V8 improves performance by compiling JavaScript into machine code rather than bytecode or interpreting it before execution.

This article operating environment: windows7 system, javascript1.8.5 version, DELL G3 computer

V8 is an open source JavaScript engine developed by Google for use in Google Chrome and Chromium. Lars Bak is the project leader, named after the V8 engine.

V8 improves performance by compiling JavaScript into machine code instead of bytecode or interpreting and executing it before execution. Further, methods such as inline caching (inline caching) are used to improve performance. With these features, the speed of JavaScript programs and V8 engines is comparable to that of binary compilation.

The traditional Javascript is a dynamic language, also known as Prototype-based Language,JavaScript inheritance method is to use prototype, by specifying the prototype property, you can specify the target to inherit. Properties can be added to or removed from an object at run time, and the engine creates a property dictionary for the executing object, through which new attributes find the location of the attribute in memory. When V8 adds a property to object, it takes the last hidden class as the parent category and creates a subcategory of the new attribute's hidden class, so that property access no longer requires a dynamic dictionary lookup.

To shorten the pause caused by garbage collection, V8 uses stop-the-world, generational, and accurate garbage collectors. The execution of the program is temporarily interrupted when the collection is performed, and only the object stack is processed. Pointers to all objects in memory are also collected to avoid memory overflows. V8 assembler is based on Strongtalk assembler.

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