weakmap

ES6 solves Memory leakage through WeakMap. es6weakmap 1. Map 1. Definition Map Objects store key-value pairs, similar to Data Structure dictionaries. Compared with traditional objects, they can only use strings as keys. Map Objects can use any value

/** * * SET-MAP data structure (SET/WEAKSET/MAP/WEAKMAP) * Set is similar to array, but the elements in the collection cannot be duplicated * Map is similar to object, but the key value can be any data type * * Weakset and set differences * 1.

Original article: http://www.nczonline.net/blog/2012/11/06/ecmascript-6-collections-part-3-weakmaps/ WeakMapSimilar to the conventionalMapThey map a value to a unique key, and then they can be used to obtain the corresponding value.WeakMapAndMapThe

Detailed description of Map/WeakMap in ECMAScript6, The JS object itself is a key-value structure. Why does ES6 need to add Map? What is the difference between it and common JS objects? 1. Map 1. Map Constructor First, let's look at the simple usage

JS object itself is a key-value structure, ES6 why also need to add map, it and ordinary JS object What is the difference? One, Map 1. Map Builder First look at the simple use of map string as key, and JS object similar to var map = new

For continuous running service processes (daemon), the memory that is no longer used must be released in a timely manner. Otherwise, the memory usage is getting higher and higher, which affects the system performance and causes the process to crash.

How to Implement the syntax features of Private Members and the implementation method of private members based on JavaScript, javascript syntax Preface Encapsulation is an essential concept in the object-oriented programming paradigm. In traditional

Objective Encapsulation is an essential concept in object-oriented programming paradigm, and in traditional object-oriented languages such as java,c++, private members are an important way to implement encapsulation. But in JavaScript, it is not in

Reference Tutorial: Http://www.ruanyifeng.com/blog/2017/04/memory-leak.html What is a memory leak?The operation of the program requires memory. The operating system or runtime (runtime) must supply memory whenever the program requests it.For a

First, what is a memory leak?The operation of the program requires memory. The operating system or runtime (runtime) must supply memory whenever the program requests it.For a continuously running service process (daemon), the memory that is no