I am trying to bind all <a> elements to have onclick function. And while variable a is a, when I try to use keyword this inside of onclick it returns me Window object.
Code:
<!DOCTYPE html>
<html lang="pl">
<head>
<meta charset='utf-8'>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
</head>
<body>
<div id="stages">
<div><p>Część I</p></div>
<div><a data="audio/01-1-1.mp3">Rozdział 1</a><div></div><p>44:10</p></div>
<div><a data="audio/02-1-2.mp3">Rozdział 2</a><div></div><p>20:06</p></div>
<div><a data="audio/03-1-3.mp3">Rozdział 3</a><div></div><p>19:16</p></div>
<div><a data="audio/04-1-4.mp3">Rozdział 4</a><div></div><p>25:29</p></div>
<div><a data="audio/05-1-5.mp3">Rozdział 5</a><div></div><p>32:16</p></div>
<div><a data="audio/06-1-6.mp3">Rozdział 6</a><div></div><p>13:06</p></div>
<div><a data="audio/07-1-7.mp3">Rozdział 7</a><div></div><p>28:38</p></div>
<div><a data="audio/08-1-8.mp3">Rozdział 8</a><div></div><p>51:59</p></div>
</div>
<script>
const a = document.querySelector('#stages a')
console.log(a)
a.onclick = () => {
console.log(this);
}
</script>
</body>
</html>
In order to use this, you need to create a regular anonymous function rather than an arrow function.
const anchors = [...document.querySelectorAll("#stages a")];
anchors.forEach(a => {
console.log(a);
a.onclick = function () {
console.log(this);
};
});
It's normal, as you're in window closure and you use an arrow function, if you need to have access to your element, you can add a prop to your arrow function like this:
const stages = [...document.querySelectorAll("#stages a")];
stages.forEach((a) => a.onclick = (e) => {
console.log(e.currentTarget);
});<!DOCTYPE html>
<html lang="pl">
<head>
<meta charset='utf-8'>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
</head>
<body>
<div id="stages">
<div><p>Część I</p></div>
<div><a data="audio/01-1-1.mp3"><strong>Rozdział 1</strong></a><div></div><p>44:10</p></div>
<div><a data="audio/02-1-2.mp3">Rozdział 2</a><div></div><p>20:06</p></div>
<div><a data="audio/03-1-3.mp3">Rozdział 3</a><div></div><p>19:16</p></div>
<div><a data="audio/04-1-4.mp3">Rozdział 4</a><div></div><p>25:29</p></div>
<div><a data="audio/05-1-5.mp3">Rozdział 5</a><div></div><p>32:16</p></div>
<div><a data="audio/06-1-6.mp3">Rozdział 6</a><div></div><p>13:06</p></div>
<div><a data="audio/07-1-7.mp3">Rozdział 7</a><div></div><p>28:38</p></div>
<div><a data="audio/08-1-8.mp3">Rozdział 8</a><div></div><p>51:59</p></div>
</div>
</body>
</html>