title: How to get response time in angular 4
body: <p>I want to calculate the response time taken by each request. Currently I am sending 50 requests to a service and I am getting responses after all the requests are sent. So I'm unable to calculate the time taken for each response as there are 49 requests after the first call.I am using http module and not http client module.  I feel the chrome developer tools is giving a correct response time but how do I capture it in angular 4 ?</p>
  
  <p><a href="https://i.stack.imgur.com/5yAAl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5yAAl.png" alt="I think it is the waiting time in below picture"></a></p>