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102. Notable JavaScript package: JavaScript Cryptographic Chat

Posted on: 2016-08-02

Since Eduard Snowden has disclosed that many people communications were being intercepted, many users become worried with whether they were being tapped on the Internet.

Several solutions appeared to provide end-to-end encryption of messages exchanged between users.

This package provides a solution to chat between two users that uses a secret key to encrypt the messages.

Even though messages are stored on the server database, it is not possible to decrypt the messages without using the password that only the users have on the browser side.

Read this article to learn more details about how this notable JavaScript package works.


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101. Notable JavaScript package: Async Function Call

Posted on: 2016-07-29

Sometimes it is necessary to call a sequence of functions but when these functions need to execute operations asynchronously you need to find a workaround so you the next functions is execute only after the last function asynchronous operations is finished.

This package implements a workaround by addong a new prototype to the function object, so you can chain the calls to multiple functions.

This ways when one asynchronous function succeeds or a given timeout period passed, it calls the next asynchronous function call.

Read this article to learn more details about how this notable JavaScript package works.


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100. How Firefox is Making JavaScript Debugging More Productive - Lately in JavaScript podcast episode 68

Posted on: 2016-07-29

Recently Firefox introduced a feature that shows in browser console links to the documentation of each JavaScript error that may happen. This helps developers to quickly to understand the errors and fix the problems faster.

This was the main topic discussed by Manuel Lemos and Arturs Sosins in the episode 67 of the Lately in PHP podcast.

They also talked about how make JavaScript testable using pure code, JavaScript variable hoisting, implementing applications based on Web Sockets and Server Sent events, jQuery 3.0 release, changing the way code JavaScript with TDD, how to take advantage of the spread operator, the EcmaScript 2016 specification, writing self documenting JavaScript code, and how to implement WebAssembly based applications on browsers that support it.

This article contains a transcript of the podcast summary below.

Listen to the podcast now, or watch the hangout video, or read the transcript text to learn more about these and other interesting JavaScript topics discussed in this podcast.


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99. Notable JavaScript package: JavaScript Summarize Text

Posted on: 2016-07-26

Many Web pages have great content that is too long for the user with lack of time to read.

For that user it would be better to have a short summary that he could read quickly before he can decide if it is interesting to read the whole page.

The object can extract summaries from Web pages by copying given elements marked with a special attribute and insert them in summary section of the page.

Read this article to learn more details about how this notable JavaScript package works.


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98. Interesting JavaScript Book Bundles of July

Posted on: 2016-07-08

Packt is a well known book publisher that also supports the JS Classes site, especially as sponsor of the JavaScript Innovation Award.

This week they have a special promotion that allows you to buy several book bundles at very good prices.

Read this article to learn what are the JavaScript book bundles they are offering and how you can obtain them.


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97. Notable JavaScript package: JavaScript Manipulate Table

Posted on: 2016-07-05

Sometimes you need to build or manipulate tables dynamically on your Web page.

This object can perform many types of operations to manipulate HTML tables, like adding and removing table cells, rows and columns, as well extract all table data into a JSON string.

Read this article to learn more details about how this notable JavaScript package works.


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96. Notable JavaScript package: Subtitle Downloader

Posted on: 2016-06-30

There are sites host videos that can have subtitles.

This package is a Chrome extension that can let the user download the video data and subtitles when available.

Read this article to learn more details about how this notable JavaScript package works.


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95. Notable JavaScript package: webfan JavaScript Intents Service Server

Posted on: 2016-06-22

Web Intents is a new W3C standard that allows to register Web services that can handle data of a certain MIME type.

So when the user needs to open or perform other action with a given file of that MIME type from the browser, he may choose from a list of Web services that can perform that action on the file.

This package can be used to register the URLs Web services that will handle given MIME types. It can also call a given callback function to process the requested action on the file.

Read this article to learn more details about how this notable JavaScript package works.


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94. How JavaScript is Reviving Desktop Applications with Electron - Lately in JavaScript podcast episode 67

Posted on: 2016-06-22

Electron is a library developed by GitHub that provides means to create and package desktop applications using the Chromium browser and Node.js.

The revival of desktop applications based on Electron was the main topic discussed by Manuel Lemos and Arturs Sosins in the episode 67 of the Lately in PHP podcast.

They also talked about the latest developments of V8 engine that already supports EcmaScript 6 new JavaScript features, WebAssembly support in the browsers, running multiple tasks in the background with Web workers, etc..

This article contains a transcript of the podcast summary below.

Listen to the podcast now, or watch the hangout video, or read the transcript text to learn more about these and other interesting JavaScript topics discussed in this podcast.


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93. Notable JavaScript package: PowerTechTools

Posted on: 2016-06-02

Technicians that work with electricity often need to make calculations with values like power, voltage, impedance, etc.. So it is always useful to have a tool at hand to make these calculations. This package can make many of those calculations.

It uses Angular.js and it can run on a browser of a mobile device.

It also uses MathML to render formulas on the Web page.

Read this article to learn more details about how this notable JavaScript package works.


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