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Este libro se dirige a expertos o posibles expertos en la creación de sitios Web. Conocer, incluso controlar JavaScript, las hojas de estilo CSS, del DOM y de AJAX, son requisitos previos indispensables para entender y poner en práctica este libro.En él, el autor ha dado prioridad a un enfoque estructurado y progresivo. Cada tema de jQuery se ilustra con un ejemplo, antes de pasar a practicar sobre aplicaciones más puntuales. Esta nueva edición del libro coincide con una evolución importante del framework jQuery. La versión jQuery 3.1 se caracteriza por un tamaño reducido del API para acelerar la carga desaparecen numerosos métodos y se modifican funciones. Los lectores que quieran iniciarse en jQuery empezarán con una librería remodelada cuyos principios seguirán siendo los mismos durante mucho tiempo. Para los desarrolladores que utilicen una versión más antigua de jQuery y que deseen migrar a esta nueva versión, el autor avisa a lo largo del libro de los problemas que se pueden encontrar en esta migración.Después de una presentación del framework, el autor dedica un capítulo a los selectores, que no solo muestran la diversidad de jQuery para acceder de manera sencilla a cualquier elemento de la página, sino que también son un concepto fundamental en el aprendizaje de jQuery. En los capítulos siguientes, el lector descubrirá los elementos interactivos de jQuery en primer lugar, cómo manipular los atributos (añadir, modificar o eliminar sobre la marcha) y después la aplicación de hojas de estilo CSS. Le siguen los eventos clásicos de JavaScript, pero sobre todo los que aporta jQuery. Después se presentan los efectos visuales, tan numerosos como originales, el estudio de DOM y de AJAX remodelados por jQuery. El capítulo final revisa alguno de los numerosos plug-ins desarrollados por la comunidad jQuery, que permiten añadir, en pocas líneas de código, efectos cuanto menos espectaculares.Cuando termine de leer el libro, el lector podrá desarrollar aplicaciones web más interactivas, ricas e innovadoras, todo ello con una facilidad de escritura de JavaScript insospechada.Los elementos adicionales se pueden descargar en el sitio web www.ediciones-eni.com.Los capítulos del libro:Prefacio Primeros pasos con jQuery Los selectores en jQuery Trabajar con los atributos y las propiedades Trabajar con las hojas de estilo CSS Los eventos Los efectos Recorrer el DOM Trabajar con el DOM Filtrar el DOM AJAX en jQuery Algunas utilidades Los formularios Los plug-ins jQuery
Traductor
JUAN FRANCISCO DÍEZ LEGLISE