Document.queryCommandSupported()

Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.

The Document.queryCommandSupported() method reports whether or not the specified editor command is supported by the browser.

Syntax

isSupported = document.queryCommandSupported(command);

Parameters

command
The command for which to determine support.

Return value

Returns a Boolean 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 [1]

Example

var flg = document.queryCommandSupported("SelectAll");

if(flg) {
  // ...Do something
}

Specifications

Specification Status Comment
execCommand

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
queryCommandSupported
DeprecatedNon-standard
Chrome Full support 1Edge Full support 12Firefox Full support 41
Full support 41
No support 9 — 41
Notes
Notes paste argument incorrectly returned true when the paste feature was available but the calling script had insufficient privileges to actually perform the action.
IE Full support 4Opera Full support ≤12.1Safari Full support 2WebView Android Full support 1Chrome Android Full support 18Firefox Android Full support 41
Full support 41
No support 9 — 41
Notes
Notes paste argument incorrectly returned true when the paste feature was available but the calling script had insufficient privileges to actually perform the action.
Opera Android Full support ≤12.1Safari iOS Full support 1Samsung Internet Android Full support 1.0

Legend

Full support  
Full support
Non-standard. Expect poor cross-browser support.
Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.
See implementation notes.
See implementation notes.

See also