js定義class，javascript class static

static定義靜態方法,不能再類的實例中調用靜態方法,在類中調用

class ClassWithStaticMethod {static staticMethod() {return 'static method has been called.';}
}console.log(ClassWithStaticMethod.staticMethod());
// expected output: "static method has been called."

語法
static methodName() { ... }

描述
不能再實例上調用