JavaScript Error: Unable to retrieve function member

Question

JavaScript Error: Unable to retrieve function member

NEWBIE question.

I'm having trouble accessing a member function. What could be causing this issue?

index.js ->
var abc = require('./def');
var foo = new abc();
foo.zxc(); 

def.js ->
var bar = function(){
// do something
    var zxc = function(){
        // do something
    }
}
module.exports = def;

When I try to run it in the browser console, I get the following error:

TypeError:foo.zxc is not a function

javascript

Answer 1

Answer №1

Considering that zxc is solely a local variable limited to the scope of the bar function, it cannot be accessed from external sources. To rectify this issue, you can modify it as follows:

var bar = function() {
   // perform actions
    this.zxc = function(){
        // perform actions
    }
}

By implementing this adjustment, zxc will become an independent property of the created object and will operate effectively.

Answer 2

Considering that zxc is solely a local variable limited to the scope of the bar function, it cannot be accessed from external sources. To rectify this issue, you can modify it as follows:

var bar = function() {
   // perform actions
    this.zxc = function(){
        // perform actions
    }
}

By implementing this adjustment, zxc will become an independent property of the created object and will operate effectively.

Answer 3

Answer №2

If you're looking to update your code structure, consider the following example:

// app.js ->
var abc = require('./def');
var instance = new abc.bar();
instance.method(); 

// def.js ->
var bar = function(){
    // perform some action
    this.method = function(){
        // perform some action
    }
}
module.exports.bar = bar;

By exporting the bar() {...} constructor in your module, it allows for easier access and usage when required into another file.

Answer 4

If you're looking to update your code structure, consider the following example:

// app.js ->
var abc = require('./def');
var instance = new abc.bar();
instance.method(); 

// def.js ->
var bar = function(){
    // perform some action
    this.method = function(){
        // perform some action
    }
}
module.exports.bar = bar;

By exporting the bar() {...} constructor in your module, it allows for easier access and usage when required into another file.

JavaScript Error: Unable to retrieve function member

Answer №1

Answer №2

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