jQuery keyup() Method
Last Updated :
07 Jul, 2023
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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:
