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JavaScript jQuery Basics (2014) Creating a Spoiler Revealer Perfect

Posted by Jay G
Jay G
2,904 Points

Using .on() instead...

I've been told that when using event listeners, you should use $(selector).on(event)...

$('.spoiler button).on('click', function(){
$('.spoiler span').show();
$(this).hide();
})

for event delegation, particularly when using aJax? Thoughts?

2 Answers

Stoyan Peshev
Stoyan Peshev
6,683 Points
Stoyan Peshev
Stoyan Peshev
6,683 Points

You can either use .click or .on, but you can do tricks with .on syntax. (Also: .click adds an event listener for every element, while .on works with on listener for all elements found.) For example, you can dynamically delegate events based on what you need at the moment, like in this case:

function subscribeTo(element, event, callback) {
    $(element).on(event, callback);
}

You can use different scenarios based on what platform your code is running on (PC/Mac, mobile etc.).

Samy Basset
Samy Basset
11,862 Points
Samy Basset
Samy Basset
11,862 Points

You can use events with dynamicly created elements with .on(), with .click() you can't.,