problem description Design a purchase, sale and inventory system for a medium-sized multi-store seller; in order to improve sales opportunities and reduce the production of expired goods, items will be transferred back and forth among multiple stores...
use jquery to get the element of a class, the console prints out jQuery.fn.init (0), and does not get the element of this kind of selector, how can I get it? Use jquery to get the HTMLCollection () collection? Native JavaScript prints out HTMLCollecti...
due to personal reasons, I misread the problem, which has now been solved. no, no, no. ...
when I use yarn install in the front-end project to prompt that java_home is not set, -Dhadoop.log.dir is not an internal or external command, but I want to use yarn s package to manage that solution ...
failed to report an error item ...
1 because $_ POST in php cannot get the json value, use the file_get_contents ( "php: input ") method to get it. After 2 is obtained, the value is obtained: title=ww&imgFile=%2Fpublic%2Fupload%2Fimage%2F20180712%2F20180712024544_27715.jpg 3...