Difference between .on('click') and .off('click').on('click')

Question

What is the use or difference of combining .off with .click?

$('#link').off('click').on('click',function(){});

vs.

$('#link').on('click',function(){});

What are the advantages of combining them?

Answer 1

This adds a new click event handler:

$('#link').on('click', function(){});

This removes all existing click event handlers that were attached with .on() (if any) and then adds a new click event handler:

$('#link').off('click').on('click', function(){});