I am unable to call private or non static method from static method in class, below is the example
class a {
fun1(){
console.log('fun1');
}
static staticfun(){
console.log('staticfun');
this.fun1();
}
}
a.staticfun();
I am trying to expose only staticfun method which internally calls all private methods, but this gives me this.fun1
is not a function. I tried to find many ways to find it with 'this', but it does work.
How do I call private instance methods inside static methods?
fun1
is not a static function, so you need to define a new instance of the a
class in order to call it:
class a { fun1() { console.log('fun1'); } static staticfun() { console.log('staticfun'); new this().fun1(); } } a.staticfun();
You should note that this is not good practice, though. You shouldn't have a static method relying on non-static logic.
A workaround would be to pass an instance of a
to the static function, but that completely defies the point of having a static method in the first place.
First, read this SO question
It's possible, You can create an instance of class a
and then invoke from the instance the method fun1
.
Although, There is no sense to call a non-static method from a static one.
static means that this method belong to the object (not to the instance)
class a { fun1(){ console.log('fun1'); } static staticfun(){ console.log('staticfun'); const classInstance = new a() classInstance.fun1(); } } a.staticfun();
Another way is to call the function directly from the class prototype (meaning literally the prototype
property, not __proto__
), if you want to avoid instantiating it.
class a {
fun1(){
console.log('fun1');
}
static staticfun(){
console.log('staticfun');
this.prototype.fun1();
}
}
a.staticfun();
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