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How to understand the DOM document object model, in view of this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

To describe the DOM document object model, the document object model (DocumentObjectModel), usually referred to as DOM, is the interface between website content and JavaScript. The DOM interface is used to access, traverse, and control HTML and XML documents.

DOM document object model

Document object Model (DocumentObjectModel), usually referred to as DOM for short, is the interface between website content and JavaScript. Since JavaScript became the most commonly used language, JavaScript and DOM document object models have generally been treated as separate entities. The DOM interface is used to access, traverse, and control HTML and XML documents.

Here are some important things to know about the DOM document object model:

The ◆ window object is a global object, you just need to try to access it using "window". The Window object contains all the JavaScript code you want to execute. Just as all objects contain properties and methods.

Properties are variables stored under the object. All variables created in the web page become properties of the window object.

The method is a function stored under the object. When all functions are stored under the window object, you can use 'methods' to reference them.

The ◆ DOM document object model creates a hierarchy relative to the Web document structure, which is composed of nodes. There are many different types of DOM nodes, the most important of which are 'Element',' Text' and 'Document'.

The Element' node represents the elements in the page, so if you have a paragraph element on the page ('

), then you can access it through the node of DOM.

The 'Text' node represents all the text in the page (in the element), so if there is some text content in the paragraph of the page, you can access it through the DOM node.

The 'Document' node represents the entire document. (it is the root node of the DOM tree)

Also note that the element attribute is the DOM node itself.

◆ 's different layout engines have some differences in the implementation of the DOM document object model standard. For example, FireFox browsers that use the Gecko layout engine perform well (but not exactly as per the W3C specification), but IE using the Trident engine is known for its many Bug and incomplete implementation of the DOM document object model standard. This is a big pain in the front-end development area.

This is the answer to the question on how to understand the DOM document object model. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.

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