title: Angular2,Typescript:How to push array of objects into another array of objects with only a few fields of the object
body: <p>I know how to operate on array of objects but never had the necessity to push one array data into another. I need to push an array of objects into another array with only 2 fields of the object. Right now my object format is somewhat like this </p>
  
  <pre><code>data: [{
          "name": "Btech",
          "courseid": "1",
          "courserating": 5,
          "points": "100",
          "type": "computers"
      },
     {
          "name": "BCom",
          "courseid": "2",
          "courserating": 5,
          "points": "100",
          "type": "computers"
      }];
  </code></pre>
  
  <p>I want to push this into another array but I want only courseid and name in the object. I've read that we need to initialise the object in the constructor, use slice() and a few other functions and then push but I don't know how can I do it for mine since I need to push one array data into another.Kindly someone help me in this regard.</p>