Tutorials with Creative Demos
Editorial Staff 
Web Scraping means navigating structured elements on a website, and deeply going to next layers. Incoming big data will be retrieved and formated in desired styles. We apply Python BeautifulSoup to a simple example for scraping with step-by-step tutorials. All codes here are not complicated, so you can easily understand even though you are still … Read more
For clarification, we describe how Python Dict use Index and other 5 operations, and how different Python List operations are. Essentially, these 2 data types are often used in Python programming. All codes here are not complicated, so you can easily understand even though you are still students in school. To benefit your learning, we … Read more
This article offers a complete approach of building a HTML bar chart using JavaScript canvas. In 7 steps, you can customize your bar chart with designed bar colors and the legend to distinguish them. More than one series of data can be set in the chart. Essentially, the JS object is truly in clear codes … Read more
We are proposing an elegant approach to draw HTML5 Canvas line chart. Each line illustrates the distribution of one series of data, and we allow multiple series to be sketched. This article divides the drawing procedure into 7 steps for which several sections explain the principle and usage. All codes here are not complicated, so … Read more
Python File Upload will be introduced by 4 methods. All of them have no relationship with browser clients. Instead, scripts runs to upload using command lines. We don’t mention about HTTP file upload service in Python, but the server site just use a PHP solution that has been discussed in our previous articles Single File … Read more
For the topic of Multiple File Upload, there are various approaches including HTML, jQuery AJAX, and PHP. This ultimate complete guide helps you understand how to choose a proper method among them. For example, only PHP cURL method is available for the case of file transfer between hosts. All codes here are not complicated, so … Read more
File Upload allow various approaches, including HTML, jQuery AJAX, and PHP. This ultimate complete guide helps you understand how to choose a proper method among them. For the case of file transfer between hosts, only PHP cURL is available. Here only single file upload is written. In next article, we will talking about multiple file … Read more
You can store JSON object or JSON array into an attribute on an HTML element, just as you treat them as strings. This article teach you how to embed JSON data in HTML, and moreover, retrieve it from HTML attributes. Along with this major topic, an extra tip about toggling to hide or show some … Read more
The best way to animate HTML elements should be the jQuery Rotate solution presented in the article. This open-source method is based on Wilq32 and will be introduced through a funny example of roulette game. All codes here are not complicated, so you can easily understand even though you are still students in school. To … Read more
A global counter example introduced here applys Shared Memory to store a common counter value for Linux processes, which tend to get incremental amounts randomly. Moreover, we assume HTTP requests require this counter, and then focus on the behavior of child processes forked by Apache daemon. As experimental proof, the simulation model in another Linux … Read more