What to do when a component renders in Lightning?
The renderedCallback() is unique to Lightning Web Components. Use it to perform logic after a component has finished the rendering phase. This hook flows from child to parent. When a component renders, the expressions used in the template are reevaluated.
How to run code when a component renders?
Example The libsChartjs module in the lwc-recipes samples repo uses the renderedCallback() lifecycle hook.
What happens when a component renders in Salesforce?
When a component renders, the expressions used in the template are reevaluated. After a component is connected and rendered, a change (or mutation) to the component’s state marks the component as dirty and enqueues a microtask to rerender the component.
What happens when you resize a window in react?
Occasionally, however, we need to render differently depending on the size of the browser window and, therefore, handle the browser resize events to change what is rendered. This guide will show you how to use React to render components when the window is resized. First we will do so by simply displaying the width and height of the window.
How to re-render a component on window resize?
To trigger a re-render of MyComponent in the example, we’ll set internal state on the component when the event is detected: Now we have set up some internal state, dimensions, that has height and width properties. Inside handleResize, we no longer simply console.log, but instead set new state when the resize is detected, using setDimensions.
Why is$ browser deprecated in Lightning aura?
Returns a FormFactor enum value based on the type of hardware the browser is running on. Indicates whether the browser is running on an Android device ( true) or not ( false ). Due to changes made by Apple, $Browser is deprecated because it no longer distinguishes between iPad and MacOS desktop.