DOM stands for Document Object Model. It is a programming interface for web documents. It is a representation of the structure of a web document and enables a programming language to manipulate the structure, style, and content of the website. The DOM represents a document as a tree of objects.
How does DOM work?
When an HTML document is loaded to a web browser, it becomes a document object. The DOM represents a document as a logical structure, making it possible for programming languages to interact with the document via the Document Object Model. Using DOM, programmers can build, navigate, and manipulate the structure of the document.
Example of DOM Manipulation
Here is a simple example of how you can use JavaScript to interact with the DOM to manipulate an HTML document.
// get the element with id 'myElement'
let element = document.getElementById('myElement');
// change the content of the element
element.innerHTML = 'New Content';
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Imagine you have a big box of Lego blocks. Each piece of Lego is like a little piece of a web page. DOM, or Document Object Model, is like the instruction manual that helps your computer understand how to put those Lego blocks together to build a web page. It's like a map of your website that the computer uses.
What does DOM look like?
The DOM looks like a family tree! Just like you have grandparents, parents, and children in a family tree, each piece of Lego (or part of the web page) also has parents, children, and siblings. This helps the computer to understand the structure of the web page and how each part connects to the other parts.
How does a computer use DOM?
DOM allows the computer to make changes to the web page. Just like how you can add or remove Lego blocks from your model, the computer can use the DOM to add, remove or change parts of the web page. This is how you see things changing on the web page when you click a button or open a new page.
DOM is a very important tool that web developers use to create interactive websites. Without it, web pages would be static and boring.
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About author
Roman Y.
Senior Software Engineer at Nike
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