In this article we have done some research into the commonly-used four ways to locally update a web page using four respective examples. These days, AJAX becomes one (accurately not the "one") of the most popular and valuable techniques to create web applications with quicker response and better user experience.

I have written this article only with the aim of summarizing traditional solutions in achieving a partially updating effect so as to better grasp the idea of AJAX. And, of course, the three foregoing ways have not become obsolete at all but own each respective scenario.