If the click button on a page initiates an HTTP URL request to execute an action, but before the action is completed, I refresh the page and then click on the button so that the previous HTTP URL request is still executing?

Source: Internet
Author: User

If the click button on a page initiates an HTTP URL request to execute an action, but before the action is completed, I refresh the page and then click on the button so that the previous HTTP URL request is still executing. Will pop up two times on the page successfully.

The answer is:

The HTTP URL request before 1 is still executing.

Because once an HTTP URL request is launched to execute an action code, it is in memory to run the code, although you refresh the page, but the previous time in memory continue to execute.

2 but the page does not eject two operations successfully.

Because you refreshed the page, the previous request was emptied in the browser. Otherwise, imagine that this is not the case: if I clicked 100,000 times and then refreshed the page, it would pop up 1 million times. This is not possible, I refresh, the previous browser request was emptied.


Pro-Test, verification:





Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.