Creating collections in a Hashtable style using JavaScript

Question

Creating collections in a Hashtable style using JavaScript

Creating a collection in JavaScript can be done in the following way:

Start by initializing an empty collection with var c = {};

Next, you can add items to it. After addition, it will look like:

{ 'buttonSubmit': function() { /* do some work */ } },
{ 'buttonCancel': function() { /* do some work */ } }

Instead of using the push method to add items one by one and create an indexed array, you can directly assign properties to the collection object without looping. This way, you can retrieve the value from the collection using c['buttonSubmit'] or d.buttonSubmit without any extra steps.

If you need assistance with code examples, feel free to ask for help!

javascript json collections hashtable addition

Answer 1

Answer №1

When you initialized the variable c as an array, it meant that you needed to use numerical indexes to access its elements. However, if you want to treat c as an object, you should use keys instead of numerical indexes.

var c = {};
c.buttonSubmit = function(){...};
c.buttonCancel = function(){...};

// Alternatively
var c = {
  buttonSubmit : function(){...},
  buttonCancel : function(){...}
}

// Accessing methods using dot notation
c.buttonSubmit();
c.buttonCancel();

// Accessing methods using bracket notation
c['buttonSubmit']();
c['buttonCancel']();

Answer 2

When you initialized the variable c as an array, it meant that you needed to use numerical indexes to access its elements. However, if you want to treat c as an object, you should use keys instead of numerical indexes.

var c = {};
c.buttonSubmit = function(){...};
c.buttonCancel = function(){...};

// Alternatively
var c = {
  buttonSubmit : function(){...},
  buttonCancel : function(){...}
}

// Accessing methods using dot notation
c.buttonSubmit();
c.buttonCancel();

// Accessing methods using bracket notation
c['buttonSubmit']();
c['buttonCancel']();

Creating collections in a Hashtable style using JavaScript

Answer №1

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