DOM: работа с HTML-страницей
Большинство действий в javascript выполняется с HTML-страницей. В javascript страница представлена в виде объектной модели DOM (Document Object Model).
Любые действия со страницей требуют вызова соответствующего метода DOM.
Понимание, как работать с документом в модели DOM - краеугольный камень в javascript-программировании.
- Введение. DOM в примерах.
Основным инструментом работы и динамических изменений на странице является DOM (Document Object Model) - объектная модель, используемая для XML/HTML-документов.
Согласно DOM-модели, документ является иерархией.
Каждый HTML-тег образует отдельный элемент-узел, каждый фрагмент текста - текстовый элемент, и т.п. читать дальше »
- DOM: свойства VS атрибуты
У DOM-элементов в javascript есть свойства и атрибуты. И те и другие имеют имя и значение.
Поэтому иногда разработчики путают одно с другим.
Между ними есть соответствие, но оно не однозначное и его лучше понимать. читать дальше »
- Интерактивное путешествие по DOM
Здесь вы сможете побродить по DOM, посмотреть все элементы и проверить, все ли вы понимаете правильно. читать дальше »
- Поиск элементов в DOM
Стандарт DOM предусматривает несколько средств поиска элемента. Это методы getElementById , getElementsByTagName и getElementsByName .
Более мощные способы поиска предлагают javascript-библиотеки. читать дальше »
- Изменение страницы посредством DOM
Рассмотрим основные способы изменять DOM, вначале - в общих чертах, затем - на конкретном примере из жизни. читать дальше »
- Списки узлов DOM. Динамика в примере.
При поиске элементов в DOM надо помнить одну простую вещь: все списки узлов - не массивы Array , а специальные динамичные сущности DOMNodeList .
Какое это имеет значение? Разберем на примере. читать дальше »
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