How to set line number, colorscheme on startup MAC VIM?

The start up settings located in vimrc file:

In [Applications] -> [MacVim] ->[Show Package Contents] -> you could find vimrc file according to the picture below...

Add the settings you need (like toggle line number or change default color scheme)

jQuery - Start

1:  $(document).ready(function() {  
2:    $('#notready').fadeOut(1000);  
3:  });  

1. $() says, "hey, jQuery things are about to happen!"

2. .ready(); is a function in jQuery. It says "hey, I'm going to do stuff as soon as the HTML document is ready!"