IT. Expert System.

JQUERY

keydown()


Description

A key press has two parts:

  1. The key is pressed down
  2. The key is released

The keydown event occurs when a keyboard key is pressed down.

The keydown() method triggers the keydown event, or specifies a function to run when a keydown event occur.

Tip: Use the event.which property to return which key was pressed.


Trigger the Event

Trigger the keydown event for the selected elements.

v1.0

This method has the form:

.keydown()

Return Value

This form returns a jQuery object.


Bind a Function to the Event

Specifies a function to run when the keydown event occurs for the selected elements.

v1.0

This method has the alternate form:

.keydown(function)
Parameter Description
function (optional) Specifies the function to run when the keydown event occurs

Return Value

This form returns a jQuery object.


v1.4.3

This method has the alternate form:

.keydown(data,function)
Parameter Description
data (optional) Specifies additional data to pass along to the function
function (optional) Specifies the function to run when the keydown event occurs

Return Value

This form returns a jQuery object.

Examples

Change the background color of an input field each time a key is pressed:

$("input").keydown(function(){
  $("input").css("background-color","#FFFFCC");
});


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