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Calling a javascript method from within an object

I am struggling with methods in JavaScript.

  obj = function(){
    this.getMail = function getMail (){
    }
//Here I would like to run the get mail once but this.getMail() or getMail() wont work
    }


var mail = new obj();
mail.getMail();

How to make a method such that I can run it both inside the object and outside

thanks

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3 answers


When you define a function, use the name only once, for example:

obj = function(){
  this.getMail = function(){
    alert("bob");
  }
}


Now you can use this.getMail()

there, you can see a working example here .

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It is recommended that you create a robust definition for your object. Create a prototype for it, then if you ever need two or more, you can make instances of them. Below, I'll cover how to create a prototype, add methods that call each other, and how to instantiate an object.

obj = function () {} // define an empty object



obj.prototype.getMail = function () {  
//this is a function on new instances of that object
   //whatever code you like
   return mail;
}

obj.prototype.otherMethod = function () { 
//this is another function that can access obj.getMail via 'this'
    this.getMail();
}

var test = new obj; //make a new instance
test.getMail();     //call the first method
test.otherMethod(); //call the second method (that has access to the first)
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here you go:

var obj = function() {

    function getMail() {
        alert('hai!');
    }

    this.getMail = getMail;
    //Here I would like to run the get mail once but this.getMail() or getMail() wont work

    getMail();
}

var mail = new obj();
mail.getMail();
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