Cannot display selected rows from mat table in angular 2 using angular material

Question

I performed a simple table in angular 2 using angular material with a select box.

When I select the desired lines and click on the wrapping of the selected lines, the lines are spliced ​​and the spliced ​​lines are displayed in my console.

But I can not display them in the output window.

Follow the link to open an example example.

I want to display console output on the output screen ... can someone help me implement this function ....!

Below is my current output window ...