ecmascript 6如何通过反射调用静态类方法

Question

So I would like to call an es 6 static class method By reflection using a string className and a string method name. I have tried several ways. unfortunately I don't seem to find the correct way to do this.

By the way (as mentioned in the comments below) I am looking for a solution where I will get the name of the class and the name of the method from dom attributes so they need to be a string.

Can anybody help?

 class a{ static b(nr){ alert('and the answer is' + nr) } } let aClassName = 'a', aMethodeName = 'b', theCompleteCall = 'a.b', anArgument = 42; //Reflect.apply(theCompleteCall,anArgument); //window[aClassName][aMethodeName](anArgument); //window[theCompleteCall](anArgument); 

Answer 1

Because of the fact that let and class not being declared in a global scope as you'd expect ( read more ), you need to declare your class in a scope accessible, like so:

window.a = class a{
    static b(nr){
    alert('and the answer is' + nr)
  }
}

let aClassName = 'a',
        aMethodeName = 'b',
    theCompleteCall = 'a.b',
    anArgument = 42;

Then, you can call with reflection, like so:

window[aClassName][aMethodeName](anArgument)

So, the solution, is to provide a scope when declaring them, and access them through that scope.

Answer 2

您正在将变量设置为字符串，而不是对对象的引用。