shiftKey The Event property
The event object
Definitions and usages
The shiftKey event property returns a Boolean value indicating whether the SHIFT key is pressed and held when an event occurs.
Grammar
event.shiftKey=true|false|1|0
The following example indicates whether the "SHIFT" key is held down when the mouse button is clicked:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool在线教程(w3cschool.cn)</title>
<script>
function isKeyPressed(event){
if (event.shiftKey==1){
Alert ("Shift button is pressed!");
}
else{
Alert ("Shift" is not pressed! ");
}
}
</script>
</head>
<body onmousedown="isKeyPressed(event)">
<p>点击该段落，弹窗会提示是否按下 shift 键。</p>
</body>
</html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool在线教程(w3cschool.cn)</title>
<script>
function isKeyPressed(event){
if (event.shiftKey==1){
Alert ("Shift button is pressed!");
}
else{
Alert ("Shift" is not pressed! ");
}
}
</script>
</head>
<body onmousedown="isKeyPressed(event)">
<p>点击该段落，弹窗会提示是否按下 shift 键。</p>
</body>
</html>
Try it out . . .
The event object