Tin mới
JavaScript: Scripting language
Web APIs: Programming interfaces
Structuring content with HTML module
Dynamic scripting with JavaScript module
Method definitions are not constructable
Methods cannot be constructors! They will throw a TypeError if you try to instantiate them. On the other hand, a property created as a function can be used as a constructor.
Using super in method definitions
Only functions defined as methods have access to the super keyword. super.prop looks up the property on the prototype of the object that the method was initialized on.
You can use the exact same syntax to define public instance methods that are available on class instances. In classes, you don't need the comma separator between methods.
You can use the exact same syntax to define public instance methods that are available on class instances. In classes, you don't need the comma separator between methods.
You can use the exact same syntax to define public instance methods that are available on class instances. In classes, you don't need the comma separator between methods.
The method syntax also supports computed property names.
This page was last modified on Jul 8, 2025 by MDN contributors.