Document: queryCommandSupported() method
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
Note:
Although the execCommand() method is deprecated, if you do decide to use it for reasons given on that page, you should consider checking the command's availability using queryCommandSupported() to ensure compatibility.
The Document.queryCommandSupported() method reports
whether or not the specified editor command is supported by the browser.
Syntax
queryCommandSupported(command)
Parameters
command-
The command for which to determine support.
Return value
Returns a boolean value which is true if the command is supported
and false if the command isn't.
Notes
The 'paste' command return false not only if the feature is
unavailable, but also if the script calling it has insufficient privileges to perform
the action.
Examples
const flg = document.queryCommandSupported("SelectAll");
if (flg) {
// Do something…
}
Specifications
This feature is not part of any current specification. It is no longer on track to become a standard. There is an unofficial W3C execCommand spec draft.
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
queryCommandSupported
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Partial support
- Partial support
- Non-standard. Check cross-browser support before using.
- Deprecated. Not for use in new websites.
- Has more compatibility info.