title: Passing value between two components (pages) in Angular 2
body: <p>I am using Angular 2 (TypeScript)</p>
  
  <p>I have two components (actually they are two pages too). They are NOT parent and child relationship.</p>
  
  <p>I want to pass a value to second component(page) when I click the link in the first component(page).</p>
  
  <p>I know "URL parameters" way through router. But I don't want to show this parameter in the link. Is there any other way?</p>
  
  <p>Thank you!</p>