Document.queryCommandSupported()

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.

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 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

var 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.

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
queryCommandSupported
1
12
41
1-41
paste argument incorrectly returned true when the paste feature was available but the calling script had insufficient privileges to actually perform the action.
4
≤12.1
2
1
18
41
4-41
paste argument incorrectly returned true when the paste feature was available but the calling script had insufficient privileges to actually perform the action.
≤12.1
1
1.0

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/Document/queryCommandSupported