This feature is well established and works across many devices and browser versions. It’s been available across browsers since January 2020.
The read-only assignedSlot property of the Text interface returns the HTMLSlotElement object associated with the element.
An HTMLSlotElement, or null if no <slot> element is associated with the text node.
| Specification |
|---|
| DOM> # dom-slotable-assignedslot> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
assignedSlot |
53 | 79 | 63 | 40 | 10 | 53 | 63 | 41 | 10 | 6.0 | 53 | 10 |
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https://developer.mozilla.org/en-US/docs/Web/API/Text/assignedSlot