Friday, August 25, 2023

Life Cycle of LWC


We have several life cycle methods in LWC. They are:

constructor(): This method is called when a component is created. It is used for initializing class properties and setting up the initial state.

connectedCallback(): This method is called when a component is added/inserted into the DOM(document object model). After the constructor method, the connectedCallback method is called. This method is used to perform to setup that requires access to the DOM.

render(): This method is called to update the UI based on the new state. It may be called before or after connectedCallback(). This is used to define the structure of the component's UI.

disconnectedCallback(): This method is called when a component is removed from the DOM. It is used to perform clean-up tasks (any remaining DOM elements or event listeners that were added in the connectedCallback() method).

errorCallback(): This method is called when there is an error during the rendering or initialization of a component. It is typically used for handling any errors that may occur and ensuring that the component does not crash.

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