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.




toStart Optional
A boolean value: true collapses the Range to its start, false to its end. If omitted, it defaults to false .


var range = document.createRange();

referenceNode = document.getElementsByTagName("div").item(0);


Specification Status Comment
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

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) 1.0 (1.7 or earlier) 9.0 9.0 (Yes)
Parameter optional (Yes) ? 25 (25) No support[1] 15.0 (Yes)
Feature Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) 1.0 (1.0) 9.0 9.0 (Yes)
Parameter optional (Yes) ? 25 (25) No support[1] 15.0 (Yes)

[1] Optional but defaults to true.

See also

Document Tags and Contributors

 Last updated by: abbycar,