HTML | DOM TouchEvent altKey Property
The TouchEvent altKey property is a read-only property and used for returning a Boolean value which indicates whether or not the “ALT” key was pressed when a touch event was triggered. The TouchEvent altKey property mostly returns false because generally, touch devices do not have an alt key.
Syntax :
event.altKey
Return Value: It returns true if the alt key is pressed, else it returns false.
Below program illustrates the TouchEvent altKey property :
Example: Finding out whether the “ALT” key was pressed on the touch screen or not.
html
<!DOCTYPE html> < html > < meta name="viewport" content=" width = device -width, initial-scale = 1 "> < head > < title >TouchEvent altKey property in HTML</ title > < style > h1 { color: green; } h2 { font-family: Impact; } body { text-align: center; } </ style > </ head > < body ontouchstart="isKeyPressed(event)"> < h1 >w3wiki</ h1 > < h2 >TouchEvent altKey property</ h2 > < br > < p >Touch somewhere in the document and wait for an alert to tell if the ALT key was pressed or not.</ p > < script > function count(event) { // Check whether the ALT key has been pressed // or not. if (event.altKey) { alert("ALT key has been pressed!"); } else { alert("ALT key has not been pressed!"); } } </ script > </ body > </ html > |
Output:
- Before clicking the button:
- After clicking the button:
Supported Browsers:
- Google Chrome 22 and above
- Edge 79 and above
- Firefox 52 and above
- Opera 15 and above
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