9) Stack: Push the value in the input field onto a Stack when the user presses enter. Pop the top most value when the Pop button is clicked. Show all elements in an unordered list. This is how the page appears after pushing 1, 2, 3, 4, 5, and 6 and then popping the stack three times, followed by pushing 7 and 8. Using JavaScript to Change the HTML O Calculator 11 Hide / Show Push 2) Change 7 Styles 3) Move Text 41 Add to Array 51 Over Out