Iterators Using ES6 – Felipe Valdivia – Medium

  • However, as is often the case when a task occurs frequently, JavaScript now provides methods that simplify this task.These methods, called iterators, are called on arrays and complete such tasks as altering each element and selecting elements that fit certain criteria.So in this article you are going to learn how to use some of this iterator.
  • forEach()” will execute the same code on each element of an array.forEach() ExampleThis iterator will execute the same code on each element of an array, so in the example above we are going to go over each element in our array and print it on the console, the argument that you can see in parenthesis doesn’t matter in this case we are using “fruitItem” because is a good practice to have descriptives names.
  • map() iterator but in this case we are creating a new array with the result, so we need to create the variable and inside the block have the condition, that in this case we are going to create a new array with all the numbers divided by 100.
  • filter() exampleIn this example you can see how with filter we go over all the items but we just return the ones that are shorter than 6 characters creating a new array just with these data that is already filter for our condition.ConclusionYes I know this article is short but I present to you 3 different types of iterator using javascript with this you can start playing with them creating projects just to get familiar with them.I can give you some research task that you can do, look for this 3 other that they are pretty common and learn how to use them, I hope you can start a project with this information or solve different problems.so briefly we can say:.
  • filter() checks every element in an array to see if it meets certain criteria and returns a new array with the elements that return truthy for the criteria.You can visit the Mozilla Developer Network to learn more about iterator methods (and all other parts of JavaScript!)

Hello guys this is my second article here about front end and this time I am going to be talking about the different iterators that we have in EcmaScript6. The idea of this post is just show you some…
Continue reading “Iterators Using ES6 – Felipe Valdivia – Medium”

Animate React Native UI Elements

Animate React Native UI Elements course by @browniefed #react

  • In this course we will learn and demonstrate the basic concepts of the React Native Animated API.
  • We’ll use Animated calls like and to animate style properties, and learn how to combine animations to create more complex effects.
  • We’ll learn about more advanced interactions like animations with touch events, interpolation, and flip animations.
  • The ultimate goal is to gain an understanding of how to animate React Native Views, how you can apply them to many different types of styles, and how to enhance the experience in your application.

In this course we will learn and demonstrate the basic concepts of the React Native Animated API. We’ll use Animated calls like timing and spring to animate style properties, and learn how to combine animations to create more complex effects. We’ll learn about more advanced interactions like animations with touch events, interpolation, and flip animations. The ultimate goal is to gain an understanding of how to animate React Native Views, how you can apply them to many different types of styles, and how to enhance the experience in your application.

Continue reading “Animate React Native UI Elements”

Animate React Native UI Elements

Animate React Native UI Elements course by @browniefed #react

  • In this course we will learn and demonstrate the basic concepts of the React Native Animated API.
  • We’ll use Animated calls like and to animate style properties, and learn how to combine animations to create more complex effects.
  • We’ll learn about more advanced interactions like animations with touch events, interpolation, and flip animations.
  • The ultimate goal is to gain an understanding of how to animate React Native Views, how you can apply them to many different types of styles, and how to enhance the experience in your application.

In this course we will learn and demonstrate the basic concepts of the React Native Animated API. We’ll use Animated calls like `timing` and `spring` to animate style properties, and learn how to combine animations to create more complex effects. We’ll learn about more advanced interactions like animations with touch events, interpolation, and flip animations. The ultimate goal is to gain an understanding of how to animate React Native Views, how you can apply them to many different types of styles, and how to enhance the experience in your application.

Continue reading “Animate React Native UI Elements”

What’s the deal with Synthetic Events? – Elizabeth Nicholson – Medium

What’s the deal with Synthetic Events?  #javascript #react #syntheticevent #reactjs

  • What’s the deal with Synthetic Events?Who am I?Synthetic Events are special event handlers that are built into React’s event handling system.
  • There isn’t really anything new about these events, in fact they act similarly to what you were used to with the DOM events handlers.
  • If you decide to use Synthetic Events, your work will be compatible with all modern browsers, as well as older browser versions (but why are you still using IE 1.0??)
  • Synthetic Events makes it easier for the developer to implement interesting features without having to deal with different types of event handling based on different browsers :)Another interesting perk of using Synthetic Events is that it saves memory within your app by attaching one event handler to the root rather than attaching multiple handlers directly to the DOM.
  • By attaching it to the root of the document, that event handler can listen to all other events and call each one when it is necessary.

Synthetic Events are special event handlers that are built into React’s event handling system. There isn’t really anything new about these events, in fact they act similarly to what you were used to…
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Welcome to the State of the Developer Nation survey

#Reactjs devs Win #Unity3d plus subscription Contribute to #DeveloperResearch >  #deals

  • I’m very happy, because I’m winner of a prize for participated in Developer Tools Benchmarking 2016 survey, Thanks @visionmobile
  • The State of the Developer Nation survey is the 12th Developer Economics survey by research firm VisionMobile.
  • Developer Economics is the largest independent survey.
  • All participants who complete the survey enter a prize draw (held in January).
  • We partner with the organisations, big and small, to make sure we have a representative sample across all developers.

The State of the Developer Nation survey is an independent survey tracking all trends on development, across tools, platforms, developer skills, salaries & more!
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Comparison of JS Frameworks: Angular.js vs React.js vs Ember.js

Comparison of JS Frameworks: Angular.js vs React.js vs Ember.js

  • You’ve come to a marvelous idea for a JavaScript-based application or a website.
  • A framework for creating ambitious web applications
  • The framework facilitates extension of HTML syntax and creates reusable components by directives.
  • Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
  • Determining which framework is right for you is simply a matter of evaluating your application’s needs versus the strengths of each framework.

Boost your ability to deliver ambitious and competitive web apps by choosing the right JavaScript framework to best suit your project’s needs.
Continue reading “Comparison of JS Frameworks: Angular.js vs React.js vs Ember.js”

Basics Of React Native

Basics Of #ReactNative by @ksr007 cc @CsharpCorner  #JavaScript #CsharpCorner

  • Execute the following command in the terminal to run your first react-native ios app
  • If you have successfully run the app, let’s try to modify it and see action in liveit live in action.
  • Let’s have a quick pictorial view of React vs React Native, though in this article, I am not talking about the basics of React: How a React component is rendered to its client (WEB Or Mobile Interface) is using respective frameworks.
  • You will see the immediate impact on your app.
  • sudo npm install -g react-native-cli

Read the full article, click here.


@CsharpCorner: “Basics Of #ReactNative by @ksr007 cc @CsharpCorner #JavaScript #CsharpCorner”


In this article you will learn about the basics of React Native.


Basics Of React Native

Animating SVG Charts built with React and D3 by not important on CodePen

  • As the axes and line plot components receive new data, they also receive new scales based on this data.
  • Component { render () { const xScale = this.buildScale(/* …
  • Another critical ingredient in creating charts are the scales , which will handle fitting the line plot to the dimensions of the container.
  • {x1, x2}} className=”line-chart__axis-tick line-chart__axis-tick–vertical” y1={0} y2={0} /> {labelFn(tickValue)} ); }); } render () { const {scale, view, trbl, labelFn, tickValues, orientation} = this.props; let x1 = view[0]; if (orientation === VerticalAxis.orientation.RIGHT) { x1 = 0; } const x2 = x1; const transform = `translate(${trbl[3]}, ${trbl[0]})`; return (
  • Once the wrapped components are in place, the chart gains the new behavior of smoothly animating the line plot and axes to accommodate the new data.

Read the full article, click here.


@56clindsey: “wrote a blog post about my method of #svg #charts #animation using #reactjs & #d3js via @CodePen #DataVisualization”


One possible approach to creating data visualization charts is to use React and D3, where React handles building all of the SVG and D3 does the calculations required. D3 has the capacity to create SVG elements and manipulate the DOM directly but it’s also a toolbox with just about everything needed to build charts in any way imaginable. For this blog post’s experiments, SVG and React were used but could have also been done using the Canvas element and Pixi.js, for example, thanks to D3’s flexibility.


Animating SVG Charts built with React and D3 by not important on CodePen