The first button here, "Modify Text", relates to the previous lesson. Click on the second button and notice what
happens to the paragraph below ("First text").
The text, "First text", is deleted as expected.
The code for this is almost the same as the code for modifying text. The difference is
that the node value is set to nothing ("").
var para = document.getElementById('myPara1');
The rest of the code for the paragraph is the same as the previous lesson's.