How to add/insert PHP or HTML or JavaScript code to our Joomla website/Blog?

On many occasions we want to insert PHP or HTML code to our Joomla website or web Blog. Well this can very easily done in Joomla. At present more that 50 custom modules are available, which gives facilities to insert/edit any PHP/HTML/JAVASCRIPT code in Joomla.

Some of the most popular custom module giving the said facilities are list below.

Note : You may also directly insert PHP code to any Joomla pages . But for this you need basic PHP knowledge along with Joomla file understating. If not - don't play with Joomla rather better use the above given custom modules.