Define static properties using the class syntax

Problem

You want to define a static property inside a “class”.

Ingredients

• 1 “class”
• 1 property

Directions

1. Create a “class”.

   class SomeClass {
     constructor(property) {
       this.property = property;
     }
   }

2. Add the property that should be static directly to the “class”.

   class SomeClass {
     constructor(property) {
       this.property = property;
     }
   }
   SomeClass.STATIC_PROPERTY = 'This is a static property.';

3. Voilá, there you got your static property.

   console.log(SomeClass.STATIC_PROPERTY);  // "This is a static property."

Notes

• Static properties cannot be accessed via an instance:

  let instance = new SomeClass();
  // console.log(instance.STATIC_PROPERTY);  // won't work

• To access a static property based on an instance you need to access it via the constructor property:

  let instance = new SomeClass();
  console.log(instance.constructor.STATIC_PROPERTY);