The jQuery keyup() is an inbuilt method that is used to trigger the keyup event whenever the User releases a key from the keyboard. So, Using keyup() method we can detect if any key is released from the keyboard.
Syntax:
$(selector).keyup(function)
Here selector is the selected element.
Parameters: It accepts an optional parameter as a function which gives the idea whether any key is pressed or not.
jQuery examples to show the working of keyup() Method:
Example 1: Below code is used to check if a keyboard key is released after being pressed.
HTML
<!DOCTYPE html>
<html>
<head>
<title>Jquery | Keyup() </title>
<script src=
</script>
<script>
$(document).keyup(function (event) {
alert('You released a key');
});
</script>
</head>
<body>
<center>
<h1>
Press and release a key from the keyboard
</h1>
</center>
</body>
</html>
|
Output:
Example 2: Below code is used to change background color of the page whenever a key is released from the keyboard
HTML
<!DOCTYPE html>
<html>
<head>
<title>Jquery | Keyup() </title>
<script src=
</script>
<script>
let colors = ['red', 'blue', 'green', 'grey',
'black', 'white', 'teal', 'yellow'];
let i = 0;
$(document).keyup(function (event) {
$('body').css('background-color', colors[i]);
i++;
i = i % 9;
});
</script>
</head>
<body>
<center>
<h3>
Press any key from the keyboard and then release it <br>
to change the background color of the page
</h3>
</center>
</body>
</html>
|
Output:
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Last Updated :
07 Jul, 2023
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