How to detect Click + [Shift, Ctrl, Alt] in reactjs click event?
<p>I want to do some other things when user Click+[Ctrl], but it seems that I could not detect if user press Ctrl when clicking.</p>

<p>I copy the event object infos below.</p>

<pre><code>bubbles    :    false
cancelBubble    :    false
cancelable    :    false
currentTarget    :    react
defaultPrevented    :    false
eventPhase    :    2
isTrusted    :    false
path    :    Array[1]
returnValue    :    true
srcElement    :    react
target    :    react
timeStamp    :    5690056.695
type    :    "react-click"
</code></pre>

<p>I can see the ctrlKey attribute in the arguments[0]-Proxy Object. But this object is unaccessable('Uncaught illegal access'):</p>

<pre><code>[[Target]]
:
SyntheticMouseEvent
_dispatchInstances:ReactDOMComponent
_dispatchListeners:(e)
_targetInst:ReactDOMComponent
altKey:false
bubbles:true
button:0
buttons:0
cancelable:true
clientX:275
clientY:315
ctrlKey:false
</code></pre>