An event handler property for right-click events on the window. Unless the default behavior is prevented (see examples below on how to do this), the browser context menu will activate (though IE8 has a bug with this and will not activate the context menu if a contextmenu event handler is defined). Note that this event will occur with any non-disabled right-click event and does not depend on an element possessing the "contextmenu" attribute.
Syntax
window.oncontextmenu = funcRef; //funcRef refers to the function to be called
Example
These examples will disable right click on the page:
document.oncontextmenu = function () { // Use document as opposed to window for IE8 compatibility
   return false;
};
window.addEventListener('contextmenu', function (e) { // Not compatible with IE < 9
    e.preventDefault();
}, false);
Specifications
| Specification | Status | Comment | 
|---|---|---|
| WHATWG HTML Living Standard The definition of 'oncontextmenu' in that specification. | Living Standard | 
Browser Compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) | 
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | ? | ? | ? | ? | 
| Feature | Android | Android Webview | Chrome for Android | Edge | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile | 
|---|---|---|---|---|---|---|---|---|---|
| Basic support | No support | No support | No support | ? | ? | ? | ? | ? | ? | 
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                       Last updated by:
                      erikadoyle,