How to add/include js file into Magento theme

Question

I am modifying a Magento theme. And want to add a js file into the theme /js folder. I have added the following code:

Answer 1

Add this code in,

app/design/frontend/{your_theme}/default/template/page/html/header.phtml

And put custom-script.js file in js folder on root.

FYI : Like this you can add any js/css file on phtml files