if a specification of a product has been added to the shopping cart, and the merchant deletes the specification after a period of time, won t users who have added this specification to the shopping cart make an error when browsing the shopping cart? Wha...
first of all, I found a lot of database design on Baidu, it can be said that there are different opinions! I see an intermediate table is designed like this, commodity ID sku attributes, unit price inventory, see that the intermediate attributes store js...
A rookie, all of you hope to tell ...
related codes const contains = (() => Array.prototype.includes ? (arr, value) => arr.includes(value) : (arr, value) => arr.some(el => el === value) )(); contains([ foo , bar ], baz ); => false this is an example I ...
:https: github.com neutrinojs... config node ...
as shown in the figure, not only webpack, but also react are automatically replaced, not one or two files, but the entire project. ...
process: A: not registered: 1. Click on the system entry in the user s official account-> 2. Initiate authorization callback-> 3. Pull user information openid- > 4. Query database-> 5. If there is no such openid- > 6. Save to database, save session- >...
for example: new byte [] {- 1} byte b = (byte) in.read(); is it possible to read a byte whose b value is-1 and belongs to video or audio? ...