jQuery UI consta de widgets GUI, efectos visuales y temas implementados mediante HTML , CSS y jQuery . jQuery UI es excelente para crear interfaces de interfaz de usuario para las páginas web.
El acordeón de jQuery UI beforeActivate se usa para desenstringr antes de que se active un panel de acordeón. El evento acordeón beforeActivate acepta dos valores que se enumeran a continuación.
- evento: Representa el evento para el control deslizante.
- ui: Es de un valor de tipo objeto. Contiene cuatro tipos de propiedades que se dan a continuación:
- newHeader: Representa la cabecera que se acaba de activar.
- oldHeader: Representa la cabecera que acaba de ser desactivada.
- newPanel: Representa el panel que se acaba de activar.
- oldPanel: Representa el panel que se acaba de desactivar.
Sintaxis:
Inicialice el acordeón con la devolución de llamada beforeActivate .
$( ".selector" ).accordion({
beforeActivate: function( event, ui ) {}
});
Vincule un detector de eventos al evento accordionbeforeActivate .
$( ".selector" ).on(
"accordionbeforeActivate",
function( event, ui ) {}
);
Enlace CDN: Primero, agregue los scripts jQuery UI necesarios para su proyecto.
<enlace rel=”hoja de estilo” href=”//code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css”>
<script src=”//code.jquery.com/jquery- 1.12.4.js”></script>
<script src=”//code.jquery.com/ui/1.12.1/jquery-ui.js”></script>
Ejemplo: este ejemplo describe los usos del evento jQuery UI Accordion beforeActivate .
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title> jQuery UI Accordion beforeActivate Event </title>
<link rel="stylesheet" href=
"//code.jquery.com/ui/1.12.1/themes/smoothness/jquery-ui.css">
<script src=
"//code.jquery.com/jquery-1.12.4.js">
</script>
<script src=
"//code.jquery.com/ui/1.12.1/jquery-ui.js">
</script>
<style>
h1, h3 {
text-align: center;
}
#GFG {
width: 600px;
margin: 0 auto;
}
</style>
</head>
<body>
<h1 style="color:green;">
GeeksforGeeks
</h1>
<h3>jQuery UI Accordion beforeActivate Event</h3>
<div id="GFG">
<h3>HTML</h3>
<div>
HTML stands for HyperText Markup Language.
It is used to design web pages using the
markup language. HTML is the combination
of Hypertext and Markup language. Hypertext
defines the link between the web pages and
markup language defines the text document
within the tag that define the structure
of web pages.
</div>
<h3>CSS</h3>
<div>
CSS (Cascading Style Sheets) is a stylesheet
language used to design a webpage to make it
attractive. The reason for using this is to
simplify the process of making web pages
presentable. It allows you to apply styles
on web pages. More importantly, it enables
you to do this independent of the HTML that
makes up each web page.
</div>
<h3>JavaScript</h3>
<div>
JavaScript is the world most popular
lightweight, interpreted compiled programming
language. It is also known as scripting
language for web pages. It is well-known for
the development of web pages, many non-browser
environments also use it. JavaScript can be
used for Client-side developments as well as
Server-side developments.
</div>
<h3>Bootstrap</h3>
<div>
Bootstrap is a free and open-source tool
collection for creating responsive websites
and web applications. It is the most popular
HTML, CSS, and JavaScript framework for
developing responsive, mobile-first websites.
Nowadays, the websites are perfect for all
the browsers (IE, Firefox, and Chrome) and
for all sizes of screens (Desktop, Tablets,
Phablets, and Phones).
</div>
</div>
<script>
$(document).ready(function () {
$("#GFG").accordion();
$("#GFG").on("accordionbeforeactivate", function() {
alert("Accordion beforeActivate Event Triggered!");
});
});
</script>
</body>
</html>
Producción:
Referencia: https://api.jqueryui.com/accordion/#event-beforeActivate
Publicación traducida automáticamente
Artículo escrito por blalverma92 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA