JavaScript MouseEvent altKey Property
The mouseEvent altKey property is used to define whether the alt key is pressed or not. It is a boolean value. When the alt key is pressed then on click of the mouse buttons it returns true and if it is not pressed then it returns false.
Syntax:
event.altKey
Return Value: It returns a boolean value indicating whether the alt key is pressed or not.
- true: it indicates the alt key is pressed
- false: it indicates the alt key is not pressed
Example: In this example, we will see the example of MouseEvent altKey property.
html
< body style = "text-align:center;" >
< h1 style = "color:green;" >
GeeksforGeeks
</ h1 >
< h2 >
mouseEvent altKey Property
</ h2 >
< button onclick = "geek (event);" >Get Alt key state!</ button >
< p id = "gfg" ></ p >
< script >
function geek(event) {
if (event.altKey) {
document.getElementById("gfg")
.innerHTML = "Alt key is pressed.";
} else {
document.getElementById("gfg")
.innerHTML ="Alt key is not pressed.";
}
}
</ script >
</ body >
|
Output:
Supported Browsers: The browser supported by mouseEvent altKey Property are listed below:
- Apple Safari
- Google Chrome
- Firefox
- Opera
- Internet Explorer
Last Updated :
08 Feb, 2023
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