What is the problem like this? after a prompt box pops up, the content under the original webpage is gone-php Tutorial

What is the problem like this? after a prompt box is displayed, the content on the original webpage will not be replied to for discussion (solution)

ClickOKAfter?

When executing alert, the following content has not been loaded yet. let's take a look at your code.

The page is still being loaded, so the content hasn't been loaded yet.

Remove history. go (-1 );
Add exit to the end of the script

The same thing, bro.

History. go (-1) has been deleted );
Exit is added to the end of the script.

Isn't there anything else to output ......