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MouseEvent.shiftKey 是只读属性,指出触发鼠标事件时是否按住了 shift


var shiftKeyPressed = instanceOfMouseEvent.shiftKey

Return value

A boolean


<title>shiftKey example</title>

<script type="text/javascript">

function showChar(e){
    "Key Pressed: " + String.fromCharCode(e.charCode) + "\n"
    + "charCode: " + e.charCode + "\n"
    + "SHIFT key pressed: " + e.shiftKey + "\n"
    + "ALT key pressed: " + e.altKey + "\n"


<body onkeypress="showChar(event);">
<p>Press any character key, with or without holding down
 the SHIFT key.<br />
You can also use the SHIFT key together with the ALT key.</p>


Specification Status Comment
Document Object Model (DOM) Level 3 Events Specification
Obsolete No change from Document Object Model (DOM) Level 2 Events Specification.
Document Object Model (DOM) Level 2 Events Specification
Obsolete Initial definition.

Browser compatibility

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Feature Edge Firefox (Gecko) Chrome Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Edge Firefox Mobile (Gecko) Android IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) ? ? ? ? ?

See also


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