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JavaScript Introduction to jQuery Events Intro to Events

Posted by Wilfredo Casas
Wilfredo Casas
6,174 Points

why wouldn't I just use the on. method instead of this?

Why wouldn't I just use this

$('body').on('click', function() {
  alert('clicked');
});

instead of this:

$('body').click(function() {
  alert('clicked');
  });

2 Answers

Jesus Mendoza
Jesus Mendoza
23,288 Points
Jesus Mendoza
Jesus Mendoza
23,288 Points

Hey Wilfredo,

With the .on() method you can specify a selector

$('body').on('click', '#button', (e) => {

});

That helps you to add click events to dinamically added elements. Let's say you have a function that adds a button depending on a selected option:

This wont work

$('#button').click((e) => {
console.log('I\'m a button');
});

But this works

$('#container').on('click', '#button', (e) => {
console.log('I\'m a button');
});

Have fun and merry christmas.

Wilfredo Casas
Wilfredo Casas
6,174 Points

Thanks Jesus and merry Christmas as well.

If the 'on' method has advantages over the 'click' method, is there any case where I would prefer to use the latter?

ywang04
ywang04
6,762 Points
ywang04
ywang04
6,762 Points

You can refer to the jQuery API documentation: http://api.jquery.com/click/ Basically, .click() is is a shortcut for .on( "click", handler ) in the first two variations. Here, the handler means event handler or call back function.