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JavaScript Class Static

JS Class Static Methods

Static class methods are defined on the class itself. You cannot call a static method on an object, only on an object class.

Example

					 
        
          class Car {
            constructor(name) {
              this.name = name;
            }
            static hello() {
              return "Hello!!";
            }
          }

          const myCar = new Car("Ford");

          // You can call 'hello()' on the Car Class:
          document.getElementById("demo").innerHTML = Car.hello();

          // But NOT on a Car Object:
          // document.getElementById("demo").innerHTML = myCar.hello();
          // this will raise an error.

Test Code Online

If you want to use the myCar object inside the static method, you can send it as a parameter.

Example

					 
        
          class Car {
            constructor(name) {
              this.name = name;
            }
            static hello(x) {
              return "Hello " + x.name;
            }
          }
          const myCar = new Car("Ford");
          document.getElementById("demo").innerHTML = Car.hello(myCar);

Test Code Online

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