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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 |
|---|---|---|
| HTML Editing APIs The definition of 'querycommandsupported' in that specification. |
Editor's Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 17 | 9.0 (9.0)[1] | 4.0 | ? | ? |
| Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | ? | 9.0 (9.0)[1] | ? | ? | ? |
[1] Before Firefox 41, for the command 'paste' Firefox incorrectly returned true when the paste feature was available but the calling script had insufficient privileges to actually perform the action.
See also
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