Refreshing technology has experienced approctoctional several stages:
First, add a key in the HTML file head, so that the page is jumped to the specified page after the set time (including itself);
E.g:
Second, use the frame and then refresh the frame content in the JS script.
The above two ways will be reloaded, that is, refresh, give people a feeling not very good! So no refreshing technique appeared.
Third, it is a variety of ways.
An long width in many frames is set to 0, which is not visible, and then refreshes the hidden framework through the script timing, and then "writing" to the browsing framework. Most of the early chat rooms use this technology.
In the true sense, it is still the following two technologies, and they can even achieve local refresh:
Fourth, XMLHTTP technology, you can access the ASP page, the ASPX page, WebService, etc. via XMLHTTP.
