How to use a jquery plugin to implement floating horizontal scrollbar, which is especially useful for single page application where partial content of the page (i.g. table of data) are large and dynamically updated and you don't want to make use of the browser scrollbar for scrolling the partial content.

A javascript calendar.

How to dynamically change html form action value based on user input.

Introduction to html div and span elements and their differences.

Three kinds of css placement in HTML.