title: Read values from looping angular tabular column
body: <p>I have an angular table where table rows and columns are developed from ngfor loop.
  <a href="https://i.stack.imgur.com/kROtb.png" rel="nofollow noreferrer">As shown in image my table is currently</a>.So when i clicked on save button we need to iterate through each table row and read the values present in each td and need to store them in object.so please tell how to do develop logic in angular.</p>