Add HTML elements dynamically

HTML documents are conveniently accessible and manipulable through the HTML DOM, a hierarchical representation of the document. Once a browser loads an HTML document, it becomes a Document object. By utilizing the document.createElement() method in JavaScript, developers can dynamically generate specific HTML elements. This process allows for the subsequent addition of attributes.

However, for the element to be visible within the document, it must be inserted into the DOM tree of the document. This approach empowers developers to dynamically construct and enhance the structure of HTML documents.

example
<html> <body> <button onclick="create()">Create Heading</button> <script> function create() { var h1 = document.createElement('h1'); h1.textContent = "New Heading!!!"; h1.setAttribute('class', 'note'); document.body.appendChild(h1); } </script> </body> </html>

document.createElement

The document.createElement serves to create an HTML element by specifying the desired tag. Following its creation, the textContent can be altered, and attributes like the class attribute can be adjusted using the setAttribute method. This versatility extends to the addition of various attributes, such as data attributes, akin to those in HTML. Subsequently, the element is integrated into the document's structure through the appendChild method of the body element, effectively adding it to the document's body. This sequence of actions enables the dynamic manipulation and incorporation of HTML elements into the document's structure using JavaScript.

Actually, It's essentially equivalent to < H1 class="note" > New Heading!!! < /h1 > .

Conclusion

The remarkable capability showcased here lies in our ability to generate and style elements dynamically in real-time. The choice rests with us—to either incorporate all elements during design or to employ the createElement() method for generating and inserting HTML elements dynamically during runtime. This approach grants developers the flexibility to shape web content according to specific requirements and user interactions.






Related Topics
  1. JavaScript Interview Questions (Part2)
  2. JavaScript Interview Questions (Part3)
  3. Is JavaScript a true OOP language?
  4. Advantages and Disadvantages of JavaScript
  1. Difference Between JavaScript and ECMAScript?
  2. What is noscript tag?
  3. Escaping Special Characters in JavaScript
  4. What is undefined x 1 in JavaScript?
  5. Logical operators in JavaScript
  6. Difference between '=', '==' and '===' operators in JS
  7. How to loop through objects in JavaScript?
  8. How to write html code dynamically using JavaScript?
  9. How to load another html page from javascript?
  10. What Is The Disadvantages Using InnerHTML In JavaScript?
  11. What is Browser Object Model
  12. How to detect the OS on the client machine in JavaScript?
  13. Difference between window, document, and screen in Javascript?
  14. Difference between the substr() and substring() in JavaScript?
  15. How to replace all occurrences of a string in JavaScript?
  16. Test a string as a literal and as an object in JavaScript
  17. What is Associative Array in JavaScript
  18. What is an anonymous function in JavaScript?
  19. What is the use of 'bind' method in JavaScript?
  20. Pure functions Vs. Impure functions in javascript
  21. Is Javascript a Functional Programming Language?
  22. What's the Difference Between Class and Prototypal Inheritance?
  23. Javascript, Pass by Value or Pass by Reference?
  24. How to prevent modification of an object in Javascript?
  25. What is 'this' keyword in JavaScript?
  26. How Does Function Hoisting Work in JavaScript?
  27. What do mean by NULL in Javascript?
  28. What does the delete operator do in JavaScript?
  29. What is the Infinity property used for in Javascript?
  30. Event bubbling and Event Capturing in JavScript?
  31. What is "strict mode" and how is it used in JavaScript?
  32. What is the difference between call and apply in JavaScript
  33. Entire content of a JavaScript source file in a function block?
  34. What is an immediately-invoked function expression?
  35. What is escape & unescape String functions in JavaScript?
  36. Instanceof operator in JavaScript
  37. What Are RESTful (REpresentational State Transfer)Web Services?
  38. What is Unobtrusive JavaScript & Why it's Important?
  39. What Does JavaScript Void(0) Mean?
  40. What are JavaScript Cookies?
  41. Difference between Client side JavaScript and Server side JavaScript
  42. TypeError: document.getelementbyid(...) is null
  43. Uncaught TypeError: Cannot read property of undefined In JavaScript
  44. Null and Undefined in JavaScript