Uncaught TypeError: Object [object Object] has no method 'on'

Question

Can anyone help me to figure this out ?

When I use the latest (or a newish) version of jQuery, the small script below works fine. However, when I use older versions

Answer 1

You could use delegate(), for example:

$("table").delegate("td", "click", function() {
  $(this).toggleClass("chosen");
});

This is equivalent to the following code written using on():

$("table").on("click", "td", function() {
  $(this).toggleClass("chosen");
});