Typescript: Calling method from another method of current class

Question

Supposably, I have this class:

Class ExampleClass {  
    public firstMethod(){
     // Do something  
    }  
    public secondMethod(){
     //Do something with invoke firstMethod
    }
}

How can I invoke first method from another correctly? (Simple "firstMethod()" is not working).

Denys Séguret · Accepted Answer · 2014-01-20 20:00:15Z

26

Use this :

public secondMethod(){
   this.firstMethod();
}

If you want to force the binding to the instance, use the => operator :

secondMethod= () => {
   this.firstMethod();
}

edited Jan 20, 2014 at 20:00

answered Jan 20, 2014 at 17:49

Denys Séguret

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4 Comments

Vlad Dekhanov Over a year ago

Sorry, but on my code second methhod calling from callback function. this indicate on data from calback context.

Denys Séguret Over a year ago

@VladDekhanov Edited with a solution to force the binding, as it seems to be what you want.

basarat Over a year ago

@dystroy @Vlad to be noted that super will not work with arrow functions

Ajit Hogade Over a year ago

Is there in other alternative to "this", I my callBack function "this" says undefined after running the code.

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