JavaScript page jump technology

Today I learned a new technology while watching the video learning, that is, when we usually click "Submit" or "Confirm" on a page, it will automatically jump to a page. ， Search online. Regarding this technical processing, there are many ways to deal with it, I only write down the three types I learned in the video:
1. Use a response.sendredirect Jump directly;
2. Sometimes we need some prompts, such as "Automatically jump after x seconds, if there is no jump, please click here", you can call the Delay Go To URL in Snippets in myeclipse. It will be automatically generated The following code:
[html]



Modify this code to:
[html] view plaincopy

                                                                                                                                                                                                                                                 Then it will jump directly to the "target page" after 3 seconds. This method is to set a few seconds to jump and the page will not change during this process. For example, set it to 3 seconds, and then as time changes, 3 turns to 2 and then to 1 until it jumps. Please follow Look at the third method.
3. Modify the code in method 2 to:
[html]

3
It will automatically jump after 2 seconds, if Do not jump, please click the link below

This method achieves the effect of jumping to this page after clicking submit on the previous page. After 3 seconds (this 3 will decrease to 0), it will jump to the target page.