jquery change button click function

1$("#click-button").on('click', firstClick)
2
3function firstClick() {
4    alert("First Clicked");
5    $("#click-button").off('click').on('click', secondClick)
6}
7
8function secondClick() {
9    alert("Second Clicked");
10    $("#click-button").off('click').on('click', firstClick)
11}