The most common mistakes in HTML tag writing

We better start paying attention, because HTML Police will walk through your code and pick out all your unsemantic tags . This list contains the 10 most common HTML tag errors . By noting them, we can avoid making these common mistakes and make our HTML tags meet the semantics and standards requirements.

Crime 1: Putting a block-level element inside an inline element

There are two ways to express HTML elements: block-level and inline. Each tag has a default expression, either block-level or inline. For example, div and p are block-level elements, which are used to form the document structure. Inline elements can only be inside block-level elements.

Crime 2: The img tag does not include an alt attribute

The alt attribute is a required attribute for all images displayed on a web page. It can help people know what the image is. Or it can show the meaning of the image when the Internet speed is slow. Its main purpose is to explain the meaning of the image. It is very bad to use alt="image" as an explanation. If some images are really just for decoration, then it is recommended that you write alt="".

Crime 3: Not using lists when necessary

Crime 4: Using <b> and <i> to make text bold and italic

You can use CSS to define font-weight and font-style. If you must use tags in the page, use <strong> or <em> tags instead. <b><i> has no semantic meaning, but for a simpler page, it is better to use CSS to define the style.

Crime 5: Using Too Much

<br />The line break marker should only be used to insert a particular word onto a new line after the first line break character is typed into the text flow. It should not be used to create gaps between elements, but rather to split text into different paragraphs, or to adjust the amplitude of CSS styles.

Crime 6: Using the wrong strikethrough tag

In the old days, <S> and <strike> allowed for defining site text. However, they are now defined as deprecated tags , while they still have an effect. Use the new set of tags - <del> and <ins>. To replace <s><strike>

Crime 7: Using inline styles

The most important purpose of CSS is to distinguish between documents and styles. If you write style into the page, then there is no use of CSS at all. So remember to put your style where it should be

Crime 8: Adding borders to HTML

Crime 9: Not using header tags <h1>-<h6>

Crime 10: Non-semantic <blink> or <marquee>

Not recommended by W3, the <blink> and <marquee> (flash, scroll) tags are pure ugliness.

Don't use this tag . If you must use this effect, I believe you will have other better effects.