Course Overview
2h 2m | 13 Videos | 72106 Views | 
Expert About Knockout.js Training
A glimpse of what it is, why to use it, its history and a complete overview.
Creating a website has become a necessity in today’s world if you want to grow and prosper. Hence it has become a key ingredient for anyone who wishes to make a stand in this growing IT field to learn the basics so that they can create rich web applications that are not only quick and responsive but a display that is interactive and user-friendly. The clean underlying of knockout.js training is a clean exhibit of MVVM data model that is compatible with all the web browsers; like chrome, Mozilla Firefox, internet explorer, safari, and Edge, irrespective of its orientation or demand.
What is Knockout.js?
JavaScript is an important language when it comes to the development and designing of web applications. Knockout.js, as the name suggests is something that is related to the JavaScript, t is one of the libraries of JavaScript which is used by the web developers for binding the HTML elements with various data models. Knockout.js It offers two different binding techniques that can link-up the data models with the user interface. With these techniques offered, if a change is made into the data model then it is automatically reflected into the DOM user interface and the vice versa, that is, if a change is made into the DOM user interface then the change is reflected into the data model as well. Hence, it won’t be wrong to say that Knockout.js is an easy solution for handling data-driven interfaces that are complex in nature in a simpler and easier way. The other benefit of knockout.js training is that the user no longer needs to manually track the elements of the HTML pages for any kind of data changes, as knockout.js lifts this burden off the shoulder of the user by tracking the affected data of all the features and entities of the data model which is combined with every element of the HTML DOM interface.
Importance of knockout.js
The importance of knockout.js has reached a whole new level in past few years and has emerged as a key ingredient for the web applications of modern time. During the early stage of web development, only a few lines of codes were written in JavaScript from the client side for representing the parameters, calculations and for data validation by the developers. But with the evolution of technology and with the growing demand of advancement, the demand of JavaScript has crossed the constraints of data validation and has crossed the boundaries of creating the web interfaces that are robust, rich and responsive in nature.
Important features of knockout.js Training
- Declarative Tracking: The first feature of knockout.js is the automatic tracking. It automatically tracks the reliance of the data model whenever a value is updated in it. In this, the dependency tracker which is of a single object in nature works as an intermediate between the factions for endorsing the dependency. So, when the computer observes a declaration endorsing the detection tracker, it instantly summons the evaluator function so that its initial value can be obtained. A contribution is set for all the evaluator reads and that is observable in nature. After this, knockout.js informs this to the computer observable about the updating.
- Declarative Binding: Through knockout.js training, connecting the data model and the user interfaces through its attributes becomes extremely easy as knockout.js proves to be a quick and powerful tool. There is a big difference between the binding and the observables and it is important for the developers to understand this contrast. Observables are important because if they are absent then the user interface will be processed but not more than once and neither can it automatically update the underlying data. Whereas, the importance of binding is also prominent but completely different from that of observable. Bindings are used for referring the observable properties so that the updating process can be achieved.
- Templating: If explained in a simpler term, then templates can be expressed as a set of set of HTML elements that have been used repeatedly. Templates are mainly used for applications making that are complex in nature since it possesses the property of minimizing these duplications. The question that can bug a mind is the way to create these templates. There are mainly two ways of creating templates.
- Native Templating: The templates that come under the category of native templating are used for the text binding that includes various categories like the visible binding, CSS binding, style binding, HTML binding and attributes binding. Control flow bindings, such as, with and if, for each, if not, is also included in the native templating only, as well the component binding is also a part of native templating. The bindings are used for capturing the HTML markup that is present in the element. These findings are further used as the template for casual entries. By using these templates, the need for additional libraries seizes.
- String-based Templating: This is the second form of templating and is mainly used for connecting the third party engine with the pass view model. Through this, the injected markup obtained is turned into the document, for example, JQUERY Template.
- Purely JavaScript Library: Since it is purely a library of JavaScript, hence it easily works and is compatible with all services as well as client-side tools.
- Can be easily added to the existing web applications: Adding knockout JS to the preexisting web applications is extremely easy and it does not require any huge change in the architecture of it.
- Compact in nature: Knockout JS is compact in nature and does not take a lot of place on your hard disk. The size of knockout JS after gipping is approximately 13 kb.
- Widespread collection of the specification: The correct functioning of KO can be verified without any difficulty on any new browsers and different platforms.
As specified earlier, knockout JS training is essential for writing complicated web applications as well the applications used in a shopping cart, such as Flipkart, Voonik, Snap Deal, PayTm etc., since these uses updating on regular basis and these updating happens with the number of probable customers who access the application. In these applications, the refresh rate of these templates is quite high.
Target audience of knockout.js Training
- People who are interested in designing a complex but rich and robust HTML application.
- Teachers who are willing to teach their students topics that are in demand.
- Students who are enthusiastic enough to learn new things and take up challenges.
Pre-requirements before opting for knockout.js Training
- HTML- Basic knowledge
- JavaScript- Basic knowledge
- Any database, for example, SQL Server, Oracle, DB2 or Sybase- Basic knowledge
What are the ways to use it?
If you want to make a grip at KO then the easiest way full of fun is via interactive tutorials. Once you have understood the basics of the KO then the next step involves the understanding of examples. Go through as many live examples as you can and try to understand each one of them. After these two basic steps have been successfully completed, you are now ready for the final but most important step. This step involves trying KO by yourself in your own projects.
Relationship between JQuery and Knockout JS. Are they competitors or partners?
The question that can bug the mind of any developer is the question of the relation between JQuery and Knockout JS.
JQuery is loved by all coders and why shouldn’t it be, it relieved the coders from the clumpy, unreliable DOM API, which were used in past. It won’t be wrong to say that jQuery is an outstanding low-level method for manipulating the elements in HTML file and for handling events in a web page. As can be analyzed, KO is a completely different thing from JQuery and hence solves a completely different problem.
If you have decided to use the only JQuery, and your user interface is becoming complex and tricky because of a few overlapping nature or because your UI has become non-trivial in nature, the cost of maintaining increases rapidly. This can be understood with an example; suppose there is a list that displays the items and its corresponding number. If one wishes to enable an ‘ADD’ icon then the items in the list are less than five then the task appears to be impossible because there is no such concept in JQuery about the core data model. Hence, in order to enable an ‘ADD’ icon and to get the number of items the coder needs to get the numbers of TRs in the table and infer it or use a certain CSS class. You also need to disable the ‘ADD’ icon when the number reaches 5. If just by adding an ‘ADD’ icon appeared to be so complex, imagine what if one required to add both ‘ADD’ and ‘DELETE’ icons?
How JQuery and KO are different?
The example taken above can be easily solved using KO. KO makes this task kids play as it is highly consistent and reduces the fear of complexity. All you need to do is represent all the items in form of JavaScript array, and then bind it using for each so that the array can be transformed into a table. Hence, when the array changes the UI changes with it.
Course objective of Knockout JS
The benefits of Knockout.JS training are huge and vast. It is implemented in various applications that are not only web driven but are data-driven in nature as well. KO can be used as an enhancer for a completely new concept that is MVVM architectural prototype.
Knockout JS Training Testimonials
- Educba Training Course Material: Either you will laugh or you will cry, either you will succeed or you will lose, you will either learn Knockout.js or it will throw you out permanently. But if you learn it through the training course material of Educba, knockout.js will become your favorite topic and will know KO like the back of your palm. This is the course one should pick if they wish to make their knockout.js training perfect.
- Textbooks can provide you with knowledge, but no book can replace a teacher. And the training course material for Educba is a perfect example of this, you will have the guidance of a teacher at hand 24/7 according to your convenience. Learn from the training course material of Educba and you can feel the difference in the aura of learning by yourself.
