DOM foundation of JavaScript

Summary DOM(Document Object Model) document object model, the object API for Html and XML documents, is a W3C (World Wide Web Consortium) standard. Document object model (DOM) is a platform and language neutral interface, which allows programs and scripts to dynamically access and update the content, structure and style of documents. This artic ...

Posted on Sun, 23 Feb 2020 04:13:42 -0500 by xtops

King glory reptile

Introduction Web crawler (also known as web spider, web robot, in the FOAF community, more often known as web chaser), is a program or script that automatically grabs the World Wide Web information according to certain rules. python is a cross platform computer programming language. It is an object-or ...

Posted on Thu, 20 Feb 2020 02:03:59 -0500 by blackcell

BOM Foundation for JavaScript

The BOM(Browser Object Model), also known as browser object, provides many objects for accessing browser functions.However, there is no standard for BOM. Each browser manufacturer will expand BOM objects according to their own requirements.This article mainly uses some simple examples to describe the basic knowledge of BOM in front-end developm ...

Posted on Mon, 17 Feb 2020 11:21:59 -0500 by JellyFish

Servlet file upload and download (detailed case)

Learning reference link Servlet file upload File upload download file upload with Jsp+Servlet Native Servlet file upload and download Servlet file upload and download This article uses the famous file upload and download component implementation under Apache org.apache.commons.fileupload org.apac ...

Posted on Fri, 14 Feb 2020 11:05:35 -0500 by ZachEdwards

Python crawler crawling dynamic JS web page stock information

Preparatory work In this case, we use two basic libraries required by python crawler, one is requests library, the other is beautiful soup library. It is assumed that these two libraries have been installed. If not, they can be installed through pip. Next, let's briefly talk about the functions of the ...

Posted on Tue, 11 Feb 2020 10:30:45 -0500 by crickettdt

JS event flow, DOM event flow, IE event processing, cross browser event processing, event object and type

Removal of events removeEventListener() The second parameter needs to specify the event handle to be removed. It cannot be an anonymous function because it is not recognized To remove successfully, the three parameters must be exactly the same as those in addEventListener <!DOCTYPE html> <html lang="en"> <head> <meta c ...

Posted on Sat, 08 Feb 2020 08:46:01 -0500 by Chef-Mars

Ajax&Ajax asynchronous verification of user name in Java

Ajax Asynchronous JavaScript And XML (Asynchronous JavaScript And XML) is a web development technology that creates interactive web applications. Ajax is not a new technology, but a combination of original technology. It is composed of the following technologies: Using CSS and XHTML to represent Int ...

Posted on Wed, 05 Feb 2020 04:23:14 -0500 by ernielou

List crawling of Jianshu blog

I am learning to use xpath to parse web pages recently! Try to crawl the blog of Jane book! First is the individual user's blog article crawls! After that, I will continue to try to crawl the articles of the first 100 pages of the user list in Jianshu website! The first is the crawling of individual use ...

Posted on Tue, 04 Feb 2020 05:59:15 -0500 by Jaxeed

javascript, learning grammar from the official mozilla website, is great

The link to the original text of this article is: https://blog.csdn.net/freewebsys/article/details/81153733 The blogger's address is: http://blog.csdn.net/freewebsys 1, About mozilla developers https://developer.mozilla.org/zh-CN/ There's also a developer center where searches for JavaScript writing are fairly comprehen ...

Posted on Fri, 31 Jan 2020 22:41:20 -0500 by devman42

Canvass' carousel draw

Canvass' carousel draw   1. Sorting (1) the rotary table is mainly the product position / / sAngle start radian baseRadian product default radian [option.canvas / 2.25 large circle radius                     let tranX = 0 + Math.cos(sAngle + _option.baseRadian / 2) * _option.canvasH / 2.25;                     let tranY = ...

Posted on Fri, 31 Jan 2020 09:46:22 -0500 by leewad