What is the keydown event in jquery?

The keydown method in jquery is used to trigger a keydown event or specify a function to be run when a keydown event occurs. The syntax for triggering a keydown event is such as "$(selector).keydown()".

The operating environment of this article: windows7 system, jquery3.2.1 version, DELL G3 computer

What is the keydown event in jquery?

jQuery keydown() method

The complete key press process is divided into two parts: 1. The key is pressed; 2. The key is released.

The keydown event occurs when the button is pressed.

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

Note: If set on a document element, this event will occur regardless of whether the element has focus.

Tip: Use the .which property to determine which key was pressed (try it yourself).

Trigger the keydown event

Syntax

$(selector).keydown()

Bind the function to the keydown event

Syntax

$(selector).keydown(function)

Parameters

function Optional. Specifies the function to run when the keydown event occurs.

Example

When the keyboard key is pressed, set the background color of the field:

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

Recommended learning:《jquery video tutorial》

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