How to Escape Colons in CSS Classes in JavaScript
When selecting an HTML element with a CSS class containing special characters such as colons (:) using document.querySelector or document.querySelectorAll, you need to escape those characters to ensure proper selection. For example, if the CSS class is empty:hidden, which contains a colon, write the selector as follows:
const elements = document.querySelectorAll('.empty\\:hidden');
In this code, the backslash (\) is used to escape the colon in the CSS class name. This allows you to correctly target elements with the empty:hidden class. Here's a complete example of how you can use this code to select and manipulate elements with colons in class names:
<!DOCTYPE html>
<html>
<head>
<style>
.empty\:hidden {
display: none;
}
</style>
</head>
<body>
<div class=`empty:hidden`>This is a hidden element with the class `empty:hidden`.</div>
<div>This is a visible element.</div>
<script>
const elements = document.querySelectorAll('.empty\\:hidden');
elements.forEach(element => {
element.textContent = "This element was selected and manipulated.";
});
</script>
</body>
</html>
In this example, the JavaScript code selects all elements with the empty:hidden class and changes their content. The backslash before the colon is used to correctly escape the colon character in the CSS class name.
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This post was written by Ramiro Gómez (@yaph) and published on . Subscribe to the Geeksta RSS feed to be informed about new posts.
Tags: code howto javascript web development
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