The Range.collapse()
method collapses the Range
to one of its boundary points.
A collapsed Range
is empty, containing no content, specifying a single-point in a DOM tree. To determine if a Range
is already collapsed, see the Range.collapsed
property.
Syntax
range.collapse(toStart);
Parameters
toStart
Optional- A
Boolean
value:true
collapses theRange
to its start,false
to its end. If omitted, it defaults tofalse
.
Example
var range = document.createRange(); referenceNode = document.getElementsByTagName("div").item(0); range.selectNode(referenceNode); range.collapse(true);
Specifications
Specification | Status | Comment |
---|---|---|
DOM The definition of 'Range.collapse()' in that specification. |
Living Standard | The parameter is now optional and default to false . |
Document Object Model (DOM) Level 2 Traversal and Range Specification The definition of 'Range.collapse()' in that specification. |
Obsolete | Initial specification. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
collapse | Chrome Full support Yes | Edge Full support 12 | Firefox Full support 4 | IE Full support 9 | Opera Full support 9 | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 4 | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
toStart parameter optional | Chrome Full support Yes | Edge Full support ≤79 | Firefox Full support 25 | IE
No support
No
| Opera Full support 15 | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support 25 | Opera Android Full support 14 | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- See implementation notes.
- See implementation notes.