XRInputSourceArray: keys() method
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The keys()
method in the
XRInputSourceArray
interface returns a JavaScript
iterator
which can then be used to iterate over the keys used to reference each item in the array
of input sources.
Syntax
keys()
Parameters
None.
Return value
A
JavaScript iterator
that
can be used to walk through the keys for each entry in the list of input sources. The
values returned by the iterator are the indexes of each entry in the list; that is, the
numbers 0, 1, 2, and so forth through the index of the last item in the list.
Examples
This example snippet gets the list of inputs for a session and tries to handle each type of input device it supports using.
for (const inputIdx of xrSession.inputSources.keys()) {
/* the keys are the indexes into the list of inputs */
checkInput(xrSession.inputSources[inputIdx]);
}
Here,
for...of
is used to iterate over each of the keys. For each key, the input is retrieved using the
index with array notation: xrSession.inputSources[inputIdx]
.
Specifications
No specification found
No specification data found for api.XRInputSourceArray.keys
.
Check for problems with this page or contribute a missing spec_url
to mdn/browser-compat-data. Also make sure the specification is included in w3c/browser-specs.
Browser compatibility
BCD tables only load in the browser
See also
- Inputs and input sources
- The
XRInputSourceArray
methodvalues()
- The
Array
methodkeys()
XRInputSource