How can you communicate one component to another component of lightning?
Steps to communicate between two Lightning Components using events:
- Create an event.
- Create two lightning components: Child component and parent component.
- Register the event in the child component and fired the event in the child component JavaScript controller action.
- Handle the event in the parent component.
How does lightning pass from component to controller?
value”) ->pass value from Lightning Component to Controller. By using component. set(“v. attributeName”,value); -> pass value from Controller to Lightning Component.
How to get parent lightning component’s attribute in child?
Create the event. Register the event in child component. Fire the event through the child component controller. Handle the event in parent component fired from child component. Perform the necessary action. PS: Name used in RegisterEvent should match with Handler name, else event will not be handled.
How to bind two components in Lightning aura?
When you instantiate the wrapped component in the wrapper component, initialize the attribute value instead of initializing the attribute in the wrapped component’s client-side controller. Now, let’s update the code to use a bound expression instead. Change this line in c:parentExpr: In the Developer Console, click Update Preview for c:exprApp.
How to create data binding between component values?
When you add a component in markup, you can use an expression to initialize attribute values in the component based on attribute values of the container component. There are two forms of expression syntax, which exhibit different behaviors for data binding between the components.
How to bind child component to parent component?
Consider a c:parent component that has a parentAttr attribute. c:parent contains a c:child component with a childAttr attribute that’s initialized to the value of the parentAttr attribute.