Passing data between parent and child components is component interaction in Angular.

• Use @Input decorator to pass data from parent to child component

• Use @Output decorator and EventEmitter to pass data...read more

through @input or @output or through services

directives,@input,@output.

If sibling communication is required first send data of 1st component using @Output to Parent then pass the value to 2nd child component using @Input.

Use @ViewChild and @Vi...read more

Using @Output 

@Input and @Output decoration