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Javascript Refresh / Reload Example

When Javascript first started to be used on webpages, it had a very big advantage to it: It allowed the webpage to load information from the server asynchronously. These days you can make your webpage reload even without asking for the user’s permission, or by adding other features that improve the performance of your web app such as timing the ...

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Do You Believe in Programming Magic?

Unlike pulling a rabbit out of a hat, “magic” in programming is often performed under the guise of productivity. In this post, we’ll look at what defines a magical programming experience for better or worse. If you were in Rails around 2007 you might be quick to describe it as “auto-magical,” and this was a good thing. Magic meant freedom ...

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Javascript Onmouseover Example

Over time, programmers started paying attention not only to the functionality of their app or website, but also security, manageability and a lot of other additions that are nowadays a requirement. The one who was the most widespread and improved specifically fast was User Experience. It was given so much attention that by now there are whole concepts, programming languages, ...

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Kafka, Logs, and the Policy of Truth

Kafka is a distributed, partitioned, replicated commit log service. It provides the functionality of a messaging system, but with a unique design. (Source: Kafka) Apache Kafka is a message queue implemented as a distributed commit log. From the producer’s point of view, it logs events into channels, and Kafka holds on to those messages while consumers process them. Unlike a ...

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jQuery Next Example

The aim of this example is to show you how to use the jQuery next() method. The jQuery next() method is used for getting the next element of any HTML element. This method takes the wanted elements type as an optional argument. For example, next('span') is used to get the immediate following ‘span’ element. By using this method, only the ...

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Python Subprocess Example

In this article, using Python 3.4, we’ll learn about Python’s subprocess module, which provides a high-level interface to interact with external commands. This module is intended to be a replacement to the old os.system and such modules. It provides all of the functionality of the other modules and functions it replaces. The API is consistent for all uses, and operations ...

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Reinforcing The HTML5 Canvas With Fabric.js

The past… Applets In the previous millennium, HTML markup had limited support for graphics. If we wanted dynamic graphics, or even a page that responded seamlessly to requests, we embedded a JavaScript VM in the page to host an Applet. Indeed, Applets were an original vision for Java. An applet could draw graphics, but there were issues of Java versions ...

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