Contents
Where to find Knockout library in Magento 2?
Knockout is javascript library which is used on frontend in Magento 2. It implements Model-View-View Model ( MVVM) design pattern. You can find Knockout in Magento 2 on almost every page. The place where it’s most present is the checkout page. This is the most complicated implementation in Magento 2.
How does Magento parse the contents of a script?
Taking a closer look at this, Magento parses the script contents within the
How to intialise a component in Magento 2?
As you can see, the component to be intialised is the ‘m2kocomponent’ where we define the location of the component javascript file via the component key, and also the template. Although we are defining the template here, you can also define one in the component JS file.
Why do we use data binding in Magento?
Within Magento, we usually define a View-Model (which is a .js file) and a Template (which is a .html file), and the data in the template file is bound to the view-model, meaning whenever the data in the view-model changes, the template file changes too. Why use data-binding?
How to check block and template in Magento 2?
You can check which block file and template file are being called. Here is how the output looks on the frontend. As you can see in the below image, the output now shows header and footer. Also, Luma is a default theme of Magento 2. Therefore, you will see Luma theme for the output of your extension.
How to make use of if else condition in knockout JS?
Knockout JS is an important factor used for checkout and UI Component in Magento 2. It is known to be a difficult part of Magento 2. So, if you are planning to use if else condition base code in knockout js just like PHP, here is a step by step example of what you should be doing.
Which is the most useful feature of knockout JS?
The most useful feature in Knockout JS is the observable along with observable arrays. It enables you to have dynamic data-binding with variables which are immediately updated in the template when the value within the component changes.
What are the UI components in Magento 2?
Magento 2 UI components are used to show particular UI elements, such as tables, buttons, tabs, dialogs, and more. UI components consist of an XML declaration that specifies its configuration settings and inner structure, a JavaScript class, and Related template (s) that use the Knockout bindings.
How to create your own theme in Magento 2?
If you need to learn how to create your own theme in Magento 2, please refer to the documentation on the Magento 2 dev docs site. So, in your own theme, let’s create our new phtml file and add a block via XML into the catalog page. Create the file here: The file should just be blank for now.
How is checkout parsed in Magento 2?
Magento 2 parses the XML file checkout_index_index.xml, and runs it through the layout processor. Since the checkout_index_index.xml file declares the structure of UI Components in a tree way manner, layout processors help to modify the initial list of declared UI Components before these components are rendered on the checkout page.