How To Load Page With $("#content").load("content.html");

General General Questions
1

Using this to load url into a div doesn't work on cs cart, any fix for this $("#content").load("content.html");

2

is 'content.html' in the root of your store? Suggest you use a URL. At least "//content.html".

And your debugging should also ensure that 'id="content"' exists on the page.