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What is rendered in lightning component?
Renderer service in lightning component bundle modify the DOM elements which is created by framework for a component. We use custom renderer to change or override the default rendering behaviour of the component.
What is the use of render in lightning component?
The rerender() function enables components to update themselves based on updates to other components since they were last rendered. This function doesn’t return a value. If you update data in a component, the framework automatically calls rerender() .
What is renderer in Salesforce lightning?
Renderer in Client-side is to override default rendering for a component. You can consider what data should render on load or on reload. The framework’s rendering service takes in-memory component state and creates and manages the DOM elements owned by the component.
What is rendering in Salesforce?
A Visualforce component in a VF page can be displayed or hidden by using a rendered attribute. Rendered is bound to a Boolean variable in the controller which can be switched between true and false making the VF component display or hide depending on a Boolean value.
What is SVG in lightning component?
You can add an SVG resource to your component in two ways. Upload the SVG resource as a static resource and import it in your component’s JavaScript file. SVG (Scalable Vector Graphics) is an XML-based image format that lets you define lines, curves, shapes, and text.
What is the correct lifecycle of component rendering at client side?
Rendering lifecycle is as follows: Init event – Updates a component or fires an event after component construction but before rendering. render() – Renders the component body. afterRender() – Enables you to interact with framework after the component bodies are inserted.
What is Dom in lightning?
The Document Object Model (DOM) is the language-independent model for representing and interacting with objects in HTML and XML documents. It’s important to know how to modify the DOM safely so that the framework’s rendering service doesn’t stomp on your changes and give you unexpected results.
What is rendering and re rendering?
Rendered-This attribute is used to display a particular filed or section based on boolean value. ReRender- This is to reload some fields, or sections after some operation. Advantage of it is that the whole page is not refreshed and only a portion(the one which is ReRendered) is refreshed.
What is the difference between action function and @remote action?
thanq. Action function used to call the server side method using JavaScript. Used when we need to perform the similar action on various events. Een though you can use it in place of actionSupport as well where the only event is related to only one control.
How do I use SVG icons in lightning component?
Now Go to Home > Settings > Edit Page
- Open svg-edit.
- Create your icon and save the file locally.
- Open the file with VS Code and.
- Copy the content of the file into the lightning SVG file.
How to override default render in Lightning component bundle?
To override the default rendering process we need to extend default render by calling superRender () method then write custom code.Example: It allows the component to update themselves, when other component updates since they were last rendered. It doesn’t return any value. It automatically called when data is updated in the component.
Can a lightning component update the DOM structure?
Yes, we can manage and update the pre-defined DOM Structure by Custom Rendering functionality provided by Lightning Component Framework in Salesforce. Salesforce Lightning Component Framework has provided us four phases of Rendering. To override the base render () function after component initialization.
How does the unrender function work in Lightning?
It is triggered if anything is changed to the components just like button disable after clicked the button to show some results. If any component is not displayed due to aura:if condition is not satisfied or component is not displayed conditionally, at that point unrender () function of this component will be fired.
How is the rendering lifecycle in Salesforce Lightning?
Salesforce Lightning Component Framework has provided us four phases of Rendering. To override the base render () function after component initialization. To update the DOM tree after inserted DOM elements by render () function. This is triggered due to anything change to the components.