Analysis on the garbage collection mechanism of JavaScript

JavaScript is an excellent scripting language. This includes the flexibility of the script language.

JavaScript is an excellent scripting language. This includes the flexibility of the scripting language, as well as the features of many advanced languages. For example, a Garbage collection mechanism (GC: Garbage Collecation) is used to create and instantiate an object ). Normally, we use new to create an object. GC is responsible for reclaiming the memory occupied by the object. Therefore, understanding GC can deepen understanding of the javascript garbage collection mechanism.

When GC recycles memory, it first determines whether the object is referenced by other objects. Release the memory area of the object if no other object is referenced. Therefore, determining that the object is no longer referenced is the key to GC.