What is the Difference Between div id and div class

The main difference between div id and div class is that the div id involves assigning an id attribute to a specific div element to apply styling or interactivity to that element, while div class involves assigning the class attribute to several div elements to apply styling or interactivity to a set of div elements.

HTML stands for HyperText Markup Language. It is the basic language for all other web technologies. Generally, the main objective of using HTML for web development is to build the structure of the webpages. Programmer can define paragraphs, tables, images, lists, headings and many other elements using HTML. Furthermore, block-level elements in HTML start on a new line and take up the whole available width. For example, div is a block-level element. Programmer can use attributes to describe the characteristic of HTML elements. Two such attributes are id and class. Therefore, it is possible to use these two attributes with div as well.

Key Areas Covered

1. What is div id
      -Definition, Functionality
2. What is div class
     -Definition, Functionality
3. Difference Between div id and div class
     -Comparison of key differences

Key Terms

div id, div class, HTML

Difference Between div id and div class - Comparison Summary

What is div id  

The id attribute helps to identify each HTML element uniquely. The value of the id is unique and written inside the quotations. Programmer can give an id to an element and then type CSS or JavaScript code using that id to add styling or to make the webpage dynamic. He can use id on the div element as follows. Then, he can use this id to add styling or to make the webpage dynamic.

div id vs div class

Figure 1: div id

What is div class

The class attributes help to add equal styling for a set of elements. The styling applies to all the HTML elements with the same class. Programmer can use class attributes with div. For example, refer to the below code.

Difference Between div id and div class

Figure 2: div class

There are two div blocks. Both blocks have class countries. Therefore, the programmer can apply CSS or JavaScript on using the class attributes.

Difference Between div id and div class

Definition

div id is the assignment of the id attribute to a div block to apply styling or interactivity to that specific div block. In contrast, div class is the assignment of a class attribute to a number of div blocks to apply styling or interactivity to a group of div blocks. Thus, this is the main difference between div id and div class.

Number of elements

Furthermore, the div id is used for a specific div block. On the other hand, the div class is used for a set of div blocks. Hence, this is another difference between div id and div class.

Conclusion

In brief, div is a block-level element. The programmer can use attributes to explain the characteristics of an HTML element such as div. Moreover, two common attributes are id and class. The main difference between div id and div class is that div id involves assigning an id attribute to a specific div element to apply styling or interactivity to that element while div class involves assigning the class attribute to several div elements to apply styling or interactivity to a set of div elements.

References:

1.“HTML The Id Attribute.” HTML Id, Available here.
2.“HTML The Class Attribute.” HTML Classes, Available here.

About the Author: Lithmee

Lithmee holds a Bachelor of Science degree in Computer Systems Engineering and is reading for her Master’s degree in Computer Science. She is passionate about sharing her knowldge in the areas of programming, data science, and computer systems.

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