The Range.isPointInRange() method returns a boolean indicating whether the given point is in the Range. It returns true if the point (cursor position) at offset within ReferenceNode is within this range. 
 The Range.isPointInRange() method returns a boolean indicating whether the given point is in the Range. It returns true if the point (cursor position) at offset within ReferenceNode is within this range. 
js
isPointInRange(referenceNode, offset)
A boolean.
js
range = document.createRange(); range.selectNode(document.getElementsByTagName("div").item(0)); bool = range.isPointInRange(document.getElementsByTagName("p").item(0), 1);
| Specification | 
|---|
| DOM Standard  # dom-range-ispointinrange  | 
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
isPointInRange | 
1 | 15 | 1 | No | ≤12.1 | 3 | 4.4 | 18 | 4 | ≤12.1 | 1 | 1.0 | 
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    https://developer.mozilla.org/en-US/docs/Web/API/Range/isPointInRange