In react, scroll to the specified position to display the navigation bar, otherwise immerse in the background

Requirement description When the navigation bar is at the top, the navigation bar is immersed in the background map; when the mouse slides the scroll wheel to a certain position, the navigation bar is displayed   Implementation with native JS Add scroll event to window and execute corresponding method, here the execution method is handleScr ...

Posted on Sat, 30 May 2020 10:24:15 -0400 by Ruzzas

DHCP relay service

1: Experimental environment1.1: Huawei ensp software1.2: PC, router and switchPC in initialization state and router and switch in initialization state2, Experiment requirements, realize the whole network interworking and DHCP relay on R43: Experimental process3.1: equipment configurationIn the ensp, the PC, router and switch are ready and st ...

Posted on Thu, 28 May 2020 11:09:52 -0400 by alemapo

[selfless sharing: ASP.NET Core project actual combat (Chapter 7)] file operation FileHelper

Original text: [selfless sharing: ASP.NET Core project actual combat (Chapter 7)] file operation FileHelper   Catalog Index   [selfless sharing: ASP.NET Core project actual combat] directory index   brief introduction   In programming, in many cases, we will use the operation of files Previous series In, we have many examples ...

Posted on Sun, 24 May 2020 08:42:03 -0400 by Desertwar

centos7 implementation of network card binding technology

1.centos7 Implementation of network card binding technology one point one introduce Binding multiple network cards to the same IP address to provide external services can achieve high availability or load balancing. It is not allowed to directly set the same IP address for two network cards. Through binding, a virtual network card provides ext ...

Posted on Tue, 19 May 2020 04:24:03 -0400 by JovanLo

Log service data processing log parsing practice of Nginx

Introduction to data processing service Data processing service is a log ETL processing service launched by Alibaba cloud log service, which mainly solves the scenarios of conversion, filtering, distribution, and enrichment during data processing. The data processing service is integrated in the log service.Common scenarios supported by data p ...

Posted on Sun, 10 May 2020 09:41:19 -0400 by jebadoa

Class dump installation method

Rootless, a new feature added in Mac system 10.11, limits the permission of root user (/ usr/bin, no change allowed). Change the environment variable to use class dump. Class dump download address http://stevenygard.com/projects/class-dump/ 1. First, create a new bin directory under the current user. In the termina ...

Posted on Tue, 05 May 2020 09:51:08 -0400 by phpnewbie8

Tensorflow visual programming

Install tensoflow 1.0 Linux/ubuntu: python2.7: pip install https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.0.1-cp27-none-linux_x86_64.whl python3.5: pip3 install https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-1.0.1-cp35-cp35m-linux_x86_64.whl Maxos: python2: pip install https://storage.googleapis.com/te ...

Posted on Mon, 04 May 2020 12:04:46 -0400 by edkellett

Development tool -- docker--swarm -- cluster instance

Create cluster Initialize cluster Use docker swarm init to initialize a Swarm cluster locally. At the same time, the node automatically becomes a management node. If the host has multiple network cards and multiple IPS, you must use -- advertisement addr to specify the IP. After initialization, the token added by other nodes will be given ...

Posted on Sun, 03 May 2020 08:14:30 -0400 by Niyati_1984

nodejs crud function (orm 7n mysql..)

nodejs crud function address https://github.com/unknowSir/nodejs-crud.git function crud of a page data with paging fuzzy query image upload seven cattle front-end Preview Front end ajax+formData+html5-require native verification + FileReader front end picture preview + bootstrap + bootstrap bootstrap Paginator ...

Posted on Fri, 01 May 2020 23:55:05 -0400 by .-INSANE-.

Chapter 2: regular expressions and Cookie usage

1. Atomic concept Atom is the basic unit of regular expression import re #Ordinary characters as atoms pattern = "baidu" string = "http://www.baidu.com" result=re.search(pattern,string) print(result) import re #Nonprint characters (. Control symbols) as atoms pattern = "\n"#Line break string = """http://www.baidu.com http:www.so.com""" ...

Posted on Fri, 01 May 2020 11:15:05 -0400 by bodge