What is xType in Extjs?
xType defines the type of Ext JS UI component, which is determined during rendering of the component. For example, the element can be a textbox for which we have xType as textField or the element can have a numeric value only for which we have Numeric xType.
What is panel Extjs?
Panel is a container that has specific functionality and structural components that make it the perfect building block for application-oriented user interfaces. Panels are, by virtue of their inheritance from Ext. container. Container, capable of being configured with a layout, and containing child Components.
What is Ext component?
Ext.container.Container. lookupComponent ( item ) : Ext.Component. Called when a raw config object is added to this container either during initialization of the items config, or when new items are added), or {@link #insert inserted.
What is CLS Extjs?
cls: This is applied to the component’s root element. Quoting from the docs: An optional extra CSS class that will be added to this component’s Element. This can be useful for adding customized styles to the component or any of its children using standard CSS rules.
How do I create a form in ExtJS?
Related
- ExtJS 4.0 : Create Basic Form from existing markup.
- Create simple ExtJS form.
- ExtJS populate Ext.FormPanel with data from database (JSON)
- Sencha ext.js, create form on the fly.
What does ext create do?
JavaScript allows us to create an object using new keyword. However, Sencha recommends to use Ext. create() method to create an object of a class which is created using Ext. define() method.
What is the difference between an ext element and an ext component *?
Answer: An Ext. element encapsulates a DOM element, adding simple DOM manipulation facilities, normalizing for browser differences, whereas an Ext. component is the base class for all objects in Ext, such as controls, panels and stores.
Which of the following is a base class for all Ext JS components?
container. Container is the base class for all the containers in Ext JS.
How class is defined in Extjs?
As per the syntax of Ext. define, the first parameter ‘Student’ is class name. The second parameter is a JavaScript object which contains name and getName(), and the third parameter (optional) is callback function which will be called after ‘Student’ class is created. So this way you can create custom class in Ext JS.
What is the difference between ext create and ext define?
Ext. create – to create an instance of a pre-defined class. – the class was defined using Ext. define – used to define the data and behavior of a component.
What creates ext?
What is namespace in Extjs?
Ext JS is a JavaScript framework having functionalities of object oriented programming. Ext is the namespace, which encapsulates all the classes in Ext JS.
What are XTypes in Ext JS?
Since your component (as well as the Ext JS components) may provide a bunch of nice behavior, it is sometimes convenient to search for and retrieve a component rather than a simple DOM element or node. In short, xtypes identify components and components are a key aspect of Ext JS. Show activity on this post.
What is extext JS and how do I use it?
Ext JS will similarly render your components lazily. You may also retrieve components by ID. Since your component (as well as the Ext JS components) may provide a bunch of nice behavior, it is sometimes convenient to search for and retrieve a component rather than a simple DOM element or node.
What are XTypes and why are they important?
In short, xtypes identify components and components are a key aspect of Ext JS. Show activity on this post. I’m new to Sencha/Ext JS but I think at this point the odd notion of having a shorthand definition identifier string for only UI components must be to satisfy legacy users.
Does xtype allow deferred instantiation?
Some of the arguments above for xtype were that it allowed deferred instantiation of components. I think that is completely irrelevant – what allows deferred instantiation is the fact that Sencha/Ext JS supports the specification of a string identifier in place of an instantiated component in a view hierarchy.