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Removing a CSS class when the user clicks the browser's back button can be a bit challenging since the browser's back button doesn't directly trigger JavaScript events that you can easily listen to. However, you can achieve this by combining the use of the `popstate` event and some JavaScript logic.
Here's a general example using JavaScript and the `popstate` event:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
/* Your default styles go here */
.remove-on-back {
/* Styles you want to remove when the user clicks the back button */
color: red;
/* Add any other styles you want to remove */
}
</style>
<title>Remove Class on Back</title>
</head>
<body>
<div id="elementToModify" class="remove-on-back">
<!-- Your content goes here -->
This is a div with the class "remove-on-back".
</div>
<script>
document.addEventListener('DOMContentLoaded', function () {
const elementToModify = document.getElementById('elementToModify');
// Check if the page was reached via the back button
window.addEventListener('popstate', function (event) {
// Remove the CSS class when the back button is clicked
elementToModify.classList.remove('remove-on-back');
});
// Store the current state when the page is loaded
history.replaceState({ page: 1 }, document.title);
// Add a new entry to the browser's history when the class is removed
elementToModify.addEventListener('click', function () {
elementToModify.classList.remove('remove-on-back');
history.pushState({ page: 2 }, document.title, location.href);
});
});
</script>
</body>
</html>
```
In this example:
- The `remove-on-back` class is initially applied to the `div` element.
- When the user clicks the element, the class is removed, and a new entry is added to the browser's history using `history.pushState`.
- If the user clicks the back button, the `popstate` event is triggered, and the class is removed.
Please note that modifying the behavior of the back button can have implications for user experience and browser navigation expectations. Make sure it aligns with your application's design and usability principles.
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