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JavaScript jQuery Basics Understanding jQuery Events and DOM Traversal What is Traversal?

codekudos
codekudos
15,265 Points
Posted by codekudos
codekudos
15,265 Points

jQuery $(this) selector not working. 

$('.spoiler').on('click', 'button', (evt) => {
     //show the spoiler text 
    $(this).prev().show();
    //hide the "reveal" 
    $(this).hide();

});

I tried using various browsers. I am able to use $(evt.target) with no issues

4 Answers

Balazs Peak
Balazs Peak
46,089 Points
Balazs Peak
Balazs Peak
46,089 Points

Your code looks fine, though. I'd suggest to keep progressing with the lectures. You will know much more about the "this" keyword later on.

Andrew Karas
Andrew Karas
7,967 Points
Andrew Karas
Andrew Karas
7,967 Points

you will need to use function (e) {} instead of (e) => {}

Jeff Sanders
PLUS
Jeff Sanders
Courses Plus Student 9,426 Points
Jeff Sanders
Jeff Sanders
Courses Plus Student 9,426 Points

From MDN: "An arrow function expression has a shorter syntax than a function expression and does not have its own this, arguments, super, or new.target."

I also highly recommend reading this article: http://2ality.com/2012/04/arrow-functions.html and this https://dmitripavlutin.com/when-not-to-use-arrow-functions-in-javascript/

The "this" that you are selecting in your arrow function expression is actually 'Window'.

Bibiana Balbuena Barbosa
Bibiana Balbuena Barbosa
14,768 Points
Bibiana Balbuena Barbosa
Bibiana Balbuena Barbosa
14,768 Points

I had the same problem, this was helpfull, tks!

Tai Man Chan
PLUS
Tai Man Chan
Courses Plus Student 135 Points
Tai Man Chan
Tai Man Chan
Courses Plus Student 135 Points

becoz you're using anonymous function