html-attributes

HTML Attributes

HTML Attributes

  • All HTML components can have attributes
  • Properties provide additional information about components
  • Properties are constantly determined in the start tag
  • Properties ordinarily come in name/esteem sets like: name=”value”

The href Attribute

The <a> tag defines a hyperlink. The href attribute specifies the URL of the page the link goes to:

Example

<a href=”https://datascienceanalysiss.com/”>Visit datascienceanalysiss</a>

You will learn more about links in our HTML Links chapter.

The src Attribute

The <img> tag is used to embed an image in an HTML page. The src attribute specifies the path to the image to be displayed:

Example

<img src=”img_girl.jpg”>

There are two ways to specify the URL in the src attribute:

1. Absolute URL – Links to an external image that is hosted on another website. Example: src=”https://https://datascienceanalysiss.com/”.

Notes: External images might be under copyright. If you do not get permission to use it, you may be in violation of copyright laws. In addition, you cannot control external images; it can suddenly be removed or changed.

2. Relative URL – Links to an image that is hosted within the website. Here, the URL does not include the domain name. If the URL begins without a slash, it will be relative to the current page. Example: src=”img_girl.jpg”. If the URL begins with a slash, it will be relative to the domain. Example: src=”/images/img_girl.jpg”.

Tip: It is almost always best to use relative URLs. They will not break if you change domain.

The width and height Attributes

The <img> tag should also contain the width and height attributes, which specifies the width and height of the image (in pixels):

Example

<img src=”img_girl.jpg” width=”500″ height=”600″>

The alt Attribute

The required alt attribute for the <img> tag specifies an alternate text for an image, if the image for some reason cannot be displayed. This can be due to slow connection, or an error in the src attribute, or if the user uses a screen reader.

Example

<img src=”img_girl.jpg” alt=”Girl with a jacket”>

Example

See what happens if we try to display an image that does not exist:

<img src=”img_typo.jpg” alt=”Girl with a jacket”>