Deep Dive into CSS pointer-events: The Helper for Managing Click-Through Layers
Understanding how CSS pointer-events works in event target selection, while debunking common misconceptions about disabling and text selection.
Stock photo for illustration only, not from the actual event
- pointer-events: none changes the target element of the cursor, it does not disable events.
- Event Propagation still functions normally through the DOM.
- This property does not prevent keyboard focusing or text selection.
Under normal circumstances, the browser always selects the topmost element directly beneath the cursor. However, when pointer-events is set to none, the browser skips that element and looks for the next element underneath instead. Viewed from this perspective, most behaviors of pointer-events begin to make sense, as it acts to change which element (or which part of an SVG) becomes the event target in the first place, rather than disabling events entirely.
A common use case is modal windows. Developers might use a full-screen container to center the modal, which covers the entire viewport area. If the pointer-events value is not changed, it prevents click events from reaching the elements underneath. Setting pointer-events to none on the container thus solves this problem. But because this property is inherited, it is necessary to restore the value for the modal itself by setting pointer-events to auto.
Understanding the difference between Target Selection and Event Propagation is the core key to using this CSS property. Since the property does not stop the journey of events through the DOM, child elements located inside can still receive events and trigger the event listeners of parent elements normally through the Capturing and Bubbling processes.
An important precaution is that this property does not truly disable an element:
- The element can still receive keyboard focus via the Tab key.
- Users can still select text within that element, such as pressing Ctrl/Cmd + A.
- To disable native forms, the disabled attribute should be used instead.
- To hide a section of a web page from any interaction, including screen reader access, the inert attribute should be chosen instead.
Source: CSS-Tricks
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