In a world dominated by digital into the Internet of things (IoT) and the life-changing aspect of our way of doing business plays a crucial role. From intelligent life to workplace collaboration, and contact with field staff, things will continue to save time and increase productivity.
According to a Microsoft Internet of Things research report, about 85 percent of the respondents said they are currently using things, three-quarters of people in the project planning stage. In addition, 88% of respondents believe that things critical to the success of their business.
In the development of things, select the programming language and the selected type of sensor and other hardware devices as complex.
Typically, the life cycle involves things collected by large sensors and devices and network management data. Next, the data is processed and analyzed to make real-time decisions. In order to perform effective IoT life cycle, you need a programming language that allows you to create advanced communication between different devices easily and seamlessly stay connected throughout the ecosystem.
This is where JavaScript appears!
JavaScript for software development
now seems impossible to imagine without JavaScript software development. Throughout the Stack Overflow 2019 developer survey, JavaScript has for seven consecutive years to become the developer of popular language. In addition, 95.0% of sites use JavaScript as a client-side programming language, JavaScript importance of this fact can be determined.
As a client-side programming language, JavaScript to help you create dynamic and interactive web pages by implementing a custom client script. At the same time, you can also use the cross-platform runtime engine (such as Node.js) to write server-side code in JavaScript.
Things selected as JavaScript
JavaScript advantage is not limited to network applications. If you have JavaScript skills, you can easily migrate to the IoT application development.
For example, JavaScript can be used to construct networking solutions in the following ways:
1) Host - client-side approach
You can run JavaScript in the host PC, and then send a signal to the client (things). This mode is suitable for the actual "things" can not even run the most streamlined case JavaScript code base.
2) embedded JavaScript
Another method is achieved by the apparatus itself JavaScript code memory optimization engine. JerryScript such as a frame or the like may be used to run the device.
3) JavaScript on SBCs
In the case of using a single board computer (sbc), you can execute JavaScript code or Node.js these devices without any problems.
JavaScript has the potential to respond to events and asynchronous code execution, making it ideal for the development of IoT solutions. For rapid prototyping, it is also a good choice.
In addition, most organizations either to seek cooperation with the Internet of Things development company, or hiring to take advantage of JavaScript capabilities across heterogeneous devices to provide a unified interface of things developers.
Let us discuss in depth the main reason for the use of JavaScript in your IoT project.
Things were selected JavaScript implementation 5 reasons
Node.js
memory management,
event-driven programming
is easy to implement
JavaScript libraries and frameworks
Node.js
it is an open source, JavaScript cross-platform runtime environment for building data-centric real-time solution.
Turning its use in the IOT, which can be used to process a large number of requests generated by the sensor apparatus, the beacon transmitter and motors. Indeed, Node.js make a request - in response to flow more smoothly and quickly.
Further, the socket (Sockets) and MQ Telemetry Transport (the MQTT) Node.js very suitable protocol, which is usually used for continuous data transfer IoT applications.
Node.js comes with NPM (Node Package Manager, Node Package Manager), which is the Internet application development board (such as Arduino controller, BeagleBone Black, Raspberry Pi, and Intel IoT Edison) is equipped with more than 80 packages. This means that you can use Node.js development services to rapidly develop robust Internet of Things applications.
Memory management
method in such as C language, the use of such developers need to malloc (), calloc (), realloc () and free () such manual memory allocation and deallocation.
In the JavaScript language class, without explicitly allocate or free memory. Also known as garbage collection (Garbage Collection), JavaScript value assigned when creating objects (objects, strings, etc.), automatic release (ie, automatic allocation and deallocation) when no longer in use.
The garbage collector function enables IoT developers can focus on development rather than wasting time memory management. In a sense, due to garbage collection eliminates memory leaks, and therefore automatically releases unused memory can provide a stable IoT solutions.
Event-driven programming
event-driven applications, each device in response to appropriate activities to respond to various events. JavaScript is ideal for event-driven applications.
Event loop in JavaScript allows you to run a variety of tasks, without waiting for the completion of other tasks. This helps to respond to events in real-time, handle multiple tasks simultaneously and allows multiple devices to respond to the same event.
JavaScript support for event-driven programming to a large extent help optimize battery power.
Easy to implement
compared to other languages (such as C ++, Ruby and Python), JavaScript is an easy to learn and easy to implement programming language. It is also one of the IoT becomes easy to implement popular programming language. This is because it works well in a variety of environments, and cloud gateway and dominated.
JavaScript libraries and frameworks
along with a variety of applications increasing use of JavaScript, you can use a lot of JavaScript libraries and frameworks.
1) Script Jerry
It is a lightweight JavaScript engine designed to run on very constrained devices, such as microcontrollers. JerryScript support compile, execute on the device, and provides access to peripheral devices using JavaScript.
2)Cylon.js
Cylon.js JavaScript framework for robotics, physical computing and networking. It provides a simple and powerful way to create a solution that contains multiple different hardware devices. In addition, Cylon.js also provides support for multiple platforms device 50, and the cylon-gpio module (for the general purpose input / output module of GPIO Cylon) a shared set of general purpose input provided by the driver to provide / output support.
3)Johnny-Five
Johnny-Five is a JavaScript framework popular microprocessor for controlling various hardware components and system-on-chip on the internet. It is to want to start using JavaScript-driven robotics and design.
4)IoT.js
IoT.js Web-based technology designed to provide an interoperable service platform in the IoT world. It can be resource constrained device with only a few thousand bytes of RAM used together. Therefore, it supports a variety of "things."
As we all know, JavaScript is very popular on the Internet programming language. Thus, using the Internet is already a part of the things it is logical device. In addition, because Node.js, memory management, event-driven programming, easy to implement and JavaScript libraries and frameworks so that JavaScript is very suitable for the Internet of Things.
Above are some of my own thoughts, to share out the welcome to correct me, the way to find a wave of concern, the idea of partnership can comment or private letter I oh ~
