Document: queryCommandEnabled() 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 thecompatibility 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 theexecCommand() method is deprecated, if you do decide to use it for reasons given on that page, you should consider checking the command's availability usingqueryCommandEnabled() to ensure compatibility.
TheDocument.queryCommandEnabled() method reports whetheror not the specified editor command is enabled by the browser.
Syntax
queryCommandEnabled(command)Parameters
commandThe command for which to determine support.
Return value
Returns a boolean value which istrue if the command is enabledandfalse if the command isn't.
Notes
- For
"cut"and"copy"commands the method only returns truewhen called from a user-initiated thread. - The
"paste"command returnfalsenot only if the featureis unavailable, but also if the script calling it has insufficient privileges toperform the action.
Example
const flg = document.queryCommandEnabled("SelectAll");if (flg) { document.execCommand("SelectAll", false, null); // command is enabled, run it}Specifications
This feature is not part of any current specification. It is no longer on track to become a standard. There is an unofficialW3C execCommand spec draft.