https://developer.mozilla.org › en-US › docs › Web › JavaScript › Reference › Global_Objects › Symbol

Symbol is a built-in object whose constructor returns a symbol primitive — also called a Symbol value or just a Symbol — that's guaranteed to be unique. Symbols are often used to add unique property keys to an object that won't collide with keys any other code might add to the object, and which are hidden from any mechanisms ...

https://developer.mozilla.org › fr › docs › Web › JavaScript › Reference › Global_Objects › Symbol

Pour créer des symboles qui soient disponibles pour différents fichiers et appartiennent à l'environnement global, il faut utiliser les méthodes Symbol.for() et Symbol.keyFor() afin de définir et de récupérer les symboles listés dans le registre global.

https://www.javascripttutorial.net › symbol

The Ultimate Guide to JavaScript Symbol. Summary: in this tutorial, you will learn about the JavaScript symbol primitive type and how to use the symbol effectively. Creating symbols. ES6 added Symbol as a new primitive type.

https://www.geeksforgeeks.org › javascript-symbol-reference

The complete list of JavaScript Symbol is listed below: JavaScript Symbol Constructor: In JavaScript, a constructor gets called when an object is created. JavaScript Symbol Properties: A JavaScript property is a member of an object that associates a key with a value.

https://fr.javascript.info › symbol

Type symbole. Par spécification, seuls deux types primitifs peuvent servir de clés de propriété d’objet : type symbol. Sinon, si l’on utilise un autre type, tel que nombre, il est automatiquement converti en chaîne de caractères. Ainsi, obj[1] est identique à obj["1"], et obj[true] est identique à obj["true"]. Jusqu’à présent ...

https://www.codingbeautydev.com › blog › javascript-symbols

In this article, we learned how to create JavaScript symbols and share them in the global symbol registry. We saw the advantages of using symbols, and how well-known symbols can be used to customize the behavior of built-in JavaScript operations.

https://javascript.info › symbol

There exist many “system” symbols that JavaScript uses internally, and we can use them to fine-tune various aspects of our objects. They are listed in the specification in the Well-known symbols table: Symbol.hasInstance; Symbol.isConcatSpreadable; Symbol.iterator; Symbol.toPrimitive …and so on.