Lesson: 19 | renderedCallback()

Notes
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Notes

In LWC, the renderedCallback() is a lifecycle hook that gets called after the component's template has been rendered on the page. It is a method that allows the developer to perform some additional logic after the component has finished rendering, such as accessing the DOM and performing additional modifications or fetching data.

The renderedCallback() method is called after every render cycle, which means that it can be called multiple times during the lifetime of a component. This can be useful for scenarios where the component needs to react to changes in its state or in the state of its parent components.

One important thing to note is that any changes made to the component's state during the renderedCallback() method will trigger another rendering cycle, which can result in an infinite loop if not handled properly.

It's also worth noting that the renderedCallback() method is only called once when the component is initially rendered on the page, and subsequent re-renders will not trigger this method unless the template of the component is completely re-rendered.

Overall, the renderedCallback() method can be a powerful tool for performing additional logic after a component has rendered and can be used to manipulate the DOM or perform other actions that require the component to be fully rendered.

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Lightning Web Components

A. Component Reference (27 lessons)

B. Lightning Web Components | Utilities (11 lessons)

C. Lightning Web Component Guide (41 lessons)

D. Java Script Methods for LWC (23 lessons)

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Lesson: 19 | renderedCallback()

Notes

Lightning Web Components