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This article mainly explains "how to use keydown in jquery", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let Xiaobian take you to learn "how to use keydown in jquery"!

The keydown method in jquery is a function used to trigger keydown events or specify that it runs when keydown events occur. The syntax for triggering keydown events is "$(selector).keydown()".

Operating environment: Windows 7 system, jquery3.2.1 version, DELL G3 computer

What is keydown 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.

A keydown event occurs when the button is pressed.

The keydown() method triggers a keydown event, or specifies a function that runs when a keydown event occurs.

Note: If set on a document element, this event occurs regardless of whether the element gets focus.

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

Trigger keydown event

syntax

$(selector).keydown()

Binding a function to a keydown event

syntax

$(selector).keydown(function)

parameters

function is optional. Specifies the function that runs when a keydown event occurs.

examples

Set the background color of the field when the keyboard key is pressed:

$("input").keydown(function(){ $("input").css("background-color","yellow");}); At this point, I believe that everyone has a deeper understanding of "how to use keydown in jquery", may wish to actually operate it! Here is the website, more related content can enter the relevant channels for inquiry, pay attention to us, continue to learn!

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