MouseEvent.shiftKey

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

Syntax

var shiftKeyPressed = instanceOfMouseEvent.shiftKey

Return value

A boolean

Example

<html>
<head>
<title>shiftKey example</title>

<script type="text/javascript">

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

</script>
</head>

<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>
</body>
</html>

Specifications

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

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Desktop
Mobile

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)	?	?	?	?	?