1. Realize regular expression mobile phone verification.
Common mobile phone numbers are all 11 digits
The first 3 digits indicate the region and the operator
Regular expression ^
1. Realize regular expression mobile phone verification.
Common mobile phone numbers are all 11 digits
The first 3 digits indicate the region and the operator
Regular expression ^
Using c#’s cef3 to simulate browser operations, grab the list of keywords in the Jingdong Mall.
Get the product title, product id, product link, product price
public partial class Form1
(Fragment) is a kind of UI fragment that can be embedded in the activity, it can make the program more reasonable and make full use of the space of the large screen, so it is widely used on the tab