Getting started with Python crawler [8]: the third picture of hummingbird Web

Hummingbird net picture The capacity of the previous tutorials is relatively large. Today I write a relatively simple one. It's a hummingbird. I still use aiohttp. I hope you like it.Crawl page` https://tu.fengniao.com The front process is still based on the purpose of learning. Why do I choose hummingbirds? I can't help it. I chose it blindly ...

Posted on Wed, 16 Oct 2019 19:27:06 -0400 by cedtech31

JS data copy

The copy of JS can be divided into shallow copy and deep copy: Shallow copy: if the array element is of basic type, it will copy one copy, which will not affect each other. If it is an object or an array, it will only copy the reference of the object and the array, so that no matter we modify the old and new arrays, both will change. Deep cop ...

Posted on Wed, 16 Oct 2019 18:31:37 -0400 by krox

Several methods of traversing and filtering arrays in jquery and traversing and parsing json objects

Original link: http://www.cnblogs.com/riasky/p/3473158.html jquery grep() filter traversal array $().ready(   function(){       var array = [1,2,3,4,5,6,7,8,9];       var filterarray = $.grep(array,function(value){Return value > 5; ...

Posted on Wed, 16 Oct 2019 11:47:28 -0400 by assonitis

C + + construction and parsing JSON

JSON is a lightweight data interaction format, easy for people to read and write, but also easy for machine analysis and generation, and effectively improve the efficiency of network transmission. It is often used in practical projects. Compared with xml, JSON has many advantages, such as asking duniang, a lot of advantages. Third party Library ...

Posted on Wed, 16 Oct 2019 10:41:39 -0400 by townclown

linux operation and maintenance, the way of Architecture - kubernetes 1.13 offline cluster deployment two-way authentication

I. deployment environment 1. Server planning IP address host name CPU Memory 10.0.0.100 k8s-master01 2C 2G 10.0.0.101 k8s-node01 2C 2G 10.0.0.102 k8s-node02 2C 2G 2. Kubernetes 1.13 package download https://github.com/kubernetes/kubernetes/releases ...

Posted on Tue, 15 Oct 2019 11:14:19 -0400 by sonic_2k_uk

Several ways of js processing asynchrony

I. callback function Advantages: simple, convenient and easy to use Disadvantages: it is easy to cause the hell of callback function. Multiple callback functions are nested in the callback function, because multiple asynchronous operations cause strong coupling, and the code is disorderly and unmanageable. var xhr1 = new XMLHttpRequest(); ...

Posted on Tue, 15 Oct 2019 10:37:32 -0400 by abselect

API code example of calling the third party express bird logistics order number query interface

Recently, the website background development needs to realize the real-time query of logistics. It is found that the previously integrated express 100 logistics query API [PHP Express query source resource] can no longer be used normally. In order to facilitate the future business needs, after comparison, the third-party logistics [express bird ...

Posted on Tue, 15 Oct 2019 10:32:07 -0400 by tappy

B/S Industrial Internet Subway Industry

Preface In recent years, the integration of the Internet and transportation has changed the transaction mode, affected the transportation organization and operation mode, changed the market structure of the main body of transportation, blurred the boundaries between operation and non-operation, and better realized the intensive sharing of tran ...

Posted on Tue, 15 Oct 2019 00:59:47 -0400 by zorgon

Very complete cross-domain implementation scheme

Because of the limitation of the homologous strategy, the resources can only be obtained by satisfying the homologous scripts. Although this helps to ensure network security, on the other hand, it also limits the use of resources.So how to achieve cross-domain? Here are some ways to achieve cross-domain.<!-- more --> I. jsonp cross-domain ...

Posted on Mon, 14 Oct 2019 22:07:20 -0400 by KevinCB

Simple three steps, let you play Wechat automatic invitation plus group!!!

1. Requirement scenario Many small partners who manage a large number of Weixin communities have such a scenario. When the number of Weixin groups reaches 100 people, they will not be able to join the group by sharing the group two-dimensional code. They must add friends independently, and then invite users manually to join the crowd. If there ...

Posted on Mon, 14 Oct 2019 22:02:25 -0400 by mikeduke