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How does the LWC pass callback function dynamically?
Additional Info: In your current code, the callback function is passed via saveHandler property during the component initialization and both the components go thru connected- and rendered- callback lifecycle hooks. So, the LWC init and render lifecycle hooks wire up the callback to the button element’s click event.
How to pass data from one LWC component to another?
Tracked properties are also called private reactive properties. But both @api and @track have rendering property. Here I want to send data from one component to another so I need a public property that can hold the data that is sent from another component.
How to pass callback function dynamically in JavaScript?
In the modal component JS, define the event handler methods and hook them up in the HTML onclick attribute declaratively. The event handler code should only pass the modal component details (or form details) to the parent component via custom event. So, it doesn’t know how the data will be processed by the parent component.
When to call render and renderedcallback in LWC?
This method called after every render of the component. This hook flows from child to parent.
How is connectedcallback function in web component JavaScript?
This is one of life cycle hook in web component JavaScript. connectedCallBack function invokes/fires automatically when certain lwc component inserted into web dom. It is works like init handler in lightning aura component, we can say it is lwc init handler. It is flows from parent to child component.
How to use connectedcallback in Lightning Web Components?
I.e if main component has inner component/child components then, ConnectedCallBack function on parent invoked first and then ConnectedCallBack of child lwc component will be fired. In this function we can access only host element i.e template. By using “this.template” we can access host element.