Your web browser may be list of html tags and attributes pdf. Your internet connection may be unreliable. Nodes can also have content, including other nodes and text. HTML documents are delivered as “documents”.

The parsing process was also required to “fix-up” these errors, as best it could. Only in the rarest cases would the parser abandon parsing altogether. Elements” and “tags” are terms that are widely confused. HTML documents contain tags, but do not contain the elements. As is generally understood, the position of an element is indicated as spanning from a start tag, possibly including some child content, and is terminated by an end tag.

HTML DTD such as that for HTML 4. Also the DTD states that paragraph elements cannot be nested. If one paragraph element cannot contain another, any currently open paragraph must be closed before starting another. SGML or HTML aware parser, with knowledge of the DTD. SGML is complex, which has limited its widespread adoption and understanding. XML is similar to SGML, that can also use the DTD mechanism to specify the supported elements and their permitted combinations as document structure.

The relation from tags to elements is always that of parsing the actual tags included in the document, without the implied closures that are part of SGML. HTML also has a similar concept, although different, and the two are very frequently confused. HTML DTD that group elements as being either “block-level” or “inline”. This is used to define their nesting behavior: block-level elements cannot be placed into an inline context. This behavior cannot be changed, it is fixed in the DTD. Note though that this CSS behavior can, and frequently is, changed from the default.

However, it is quite common to set these with CSS to display as an inline list. In the HTML syntax, most elements are written with a start tag and an end tag, with the content in between. An end tag also has a slash after the opening angle bracket, to distinguish it from the start tag. A void element’s behavior is predefined, and it cannot contain any content or other elements. They may not contain any children, such as text or other elements.