Implementation steps of DOM programming in html5

This time I will introduce to you what DOM programming is. We know that DOM is the abbreviation of DocumentObjectModel, and the Chinese name is Document Object Model. At the same time, DOM is also a standard programming interface for processing HTML pages, so why do we need to learn DOM?

1, DOM allows users to interact with web page elements

For example, when I click a button, a dialog box will pop up and other operations.

2, DOM can be used to make web games

For example, for the now popular game World of Warcraft, we can completely use JavaScript to operate the DOM.

3. DOM is an important foundation for ajax.

For example, if we obtain some data through ajax and you want to display it to the user, you need to use DOM.

2: This is how we explain DOM

1, first we will explain what DOM is, which is the Document Object Model mentioned before

DOM is the standard programming for processing HTML Interface, DOM can be used by JavaScript to read and change the content and structure of HTML.

2, will explain what is the DOM tree

The hierarchical structure between objects.

3, will explain what a DOM node is

According to the W3C's HTML DOM standard, all content in an HTML document is Node:

The entire document is a document node

Each HTML element is an element node

The text within an HTML element is a text node

Each HTML The attribute is the attribute node

and the comment is the comment node

4. It will explain what the event driver

means what it does. Operation, what event is performed.

5, will explain what level 2 DOM is

What do level 1 DOM, level 2 DOM, and level 3 DOM mean respectively? How to achieve.

6, will explain what event flow is

will explain what event bubbling is, what event capture is, what functions can be achieved based on the characteristics of event flow, and how to prevent events Spread.

7, will explain what an Event is

The properties of the Event object provide details about the event.

# I believe you have mastered the methods after reading these cases. For more exciting information, please pay attention to other related articles on the php Chinese website!

Related reading:

Detailed introduction to HTML5 tag nesting rules

Notes on table nesting in HTML Matter

#html5 Detailed explanation and examples of making a turntable

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