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jQuery 3.6.2 Released! | Official jQuery Blog

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You probably weren’t expecting another release so soon, but jQuery 3.6.2 has arrived! The main impetus for this release was the introduction of some new selectors in Chrome. More on that below.

As usual, the release is available on our cdn and the npm package manager. Other third party CDNs will probably have it soon as well, but remember that we don’t control their release schedules and they will need some time. Here are the highlights for jQuery 3.6.2.

Table of Contents

undefined and whitespace-only CSS variables

jQuery 3.6.1 introduced a minor regression where attempting to retrieve a value for a custom CSS property that didn’t exist (i.e. $elem.css("--custom")) threw an error instead of returning undefined. This has been fixed in 3.6.2. Related to that, we also made sure that whitespace-only values return the same thing across all browsers. The spec requires that CSS variable values be trimmed, but browsers are inconsistent in their trimming. We now return undefined for whitespace-only values to make it consistent with older jQuery and across the different browsers.

.contains() with