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131. Notable JavaScript package: iFSM Animation

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State machines can be used to keep track of the state of elements of information that change over time according to sequences of events.

This package uses state machines to manage the state of complex animations of Web page elements according to configurable sequences of events.

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


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130. Notable JavaScript package: Jam Rules

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Testing is useful obviously to verify that a software package works as expected.

Often test unit scripts need to check if the variables of an object contain some expected values.

This package makes it easy to achieve this by letting the developer define some object matching rules and run tests that verify if the variables of target objects contain values that match the specified rules.

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


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129. Notable JavaScript package: JS Sound

Updated on: 2017-05-26

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Many sites need to call to the attention of the users when certain events occur. Playing sounds is one of the ways to achieve that.

This object can play sounds as result of events that may occur due to user interactions.

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


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128. Efficient Augmented Reality for the Web - Lately in JavaScript podcast episode 76

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The adoption of WebGL and WebRTC by mobile browsers has allowed to implement feasible augmented reality applications that let you mix 3D scenes rendered on a browser on the top of Webcam captured video.

The the main topics discussed by Manuel Lemos and Arturs Sosins in the episode 76 of the Lately in JavaScript podcast.

They also talked about asynchronous programming coming for all browsers, how to test service workers, formatting console log messages with CSS and templates, using JavaScript without loops, dynamic import of EcmaScript modules, and optimizing JavaScript startup.

This article contains a transcript and a 2 minute video summary of the podcast.

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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127. Notable JavaScript package: Simple JavaScript Windows

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Some applications need to show different types of activity on the same Web page in a way that suits better the user.

One way to display the application activities is to show them in windows that the user can manipulate, but at the same time are not blocked by browsers that block the opening of popup windows.

This package implements a window management system that runs in a single browser window, thus without using any real browser windows.

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


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126. How to Make Your Children Learn JavaScript - Lately in JavaScript podcast episode 75

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Many developers have the desire that their children also become developers, so they try to help them to learn programming as soon as possible.

The techniques that were used by a father developer to persuade his son to learn JavaScript was one the main topics discussed by Manuel Lemos and Arturs Sosins in the episode 75 of the Lately in JavaScript podcast.

They also talked about how to see JavaScript code benchmarks on the browser developer console, the truth behind JavaScript benchmarks, how to write clean JavaScript code, 2016 JavaScript project rising stars, and regular expression handling improvements in EcmaScript.

This article contains a transcript and a 4 minute video summary of the podcast.

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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125. Notable JavaScript package: jQuery Custom Select

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Form select inputs are very useful to let the users select options from a list but they are also limited in the way you can style their presentation.

This jQuery plugin provides an alternative solution that consists in recreating page elements that work like a select input, but can be styled in many ways.

It just copies the initial attributes and values of an existing select input that becomes hidden and synchronizes the selected options, so the form value submission works well as before.

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


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124. Notable JavaScript package: class.js

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EcmaScript 6 already supports JavaScript classes like in other languages but not all browser and environments on which JavaScript runs support EcmaScript 6.

This package can emulate the creation of classes using either Node.js, jQuery and JavaScript in a way that works in environments that support only EcmaScript 5.

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


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123. Notable JavaScript package: jQuery Benchmark Tool

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A command line interface is user interface component that allows users to type commands to execute actions.

This package provides a command line interface like Unix/Linux shells. It allows developers to let the users type commands with given names and it will execute actions eventually calling the Web server using AJAX requests.

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


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122. Notable JavaScript package: JS AJAXify PushState

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AJAX allows to load page content faster as it does not require to load the whole page again.

However, to take advantage of AJAX you need to change pages to send AJAX requests when the user interacts with it. You also need to update the page history, so the browser goes back to the right page when the user hits the back button.

This package provides a solution for both problems. It changes page links so when the users click on them the code sends AJAX requests to the server in order to load the next page.

At the same time, it updates the page history state, so the back button clicks will make the browser go back to the right pages.

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


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