Load several js function from the same jquery file unto several html pages at different intervals of my choice

Load several js function from the same jquery file unto several html pages
at different intervals of my choice

I have one main.js file with several functions (such as ajax calls and
page-function based) that I need to load on different intervals and
different pages. My problem is that $(document).ready(function(){}); loads
everything at once.
I know in jqm I can use .on ('pageinit', "pagename", event(){});
Is there something similar to jquery? I'd like to keep one .js file for
all my js functions in my web-app.
Thanks much.