Introduction to Selecting and Editing Elements in JavaScript

In JavaScript, the Document Object Model (DOM) allows you to access and manipulate the elements on a webpage. To select a specific element, you can use the querySelector method to find the first element that matches a specific CSS selector.

To select the <h1> element on a page, for example, you can use the following code:

let header = document.querySelector('h1');

This code will create a new variable called header that references the first <h1> element on the page. You can then use this variable to edit the text inside the element using the innerText property.

For example, to change the text inside the <h1> element to "JavaScript", you can use the following code:

header.innerText = 'JavaScript';

This will replace the text inside the <h1> element with the string "JavaScript".

You can also use other methods to edit the contents of an element, such as changing the innerHTML property to include HTML tags, or appending new elements using the appendChild method.

Overall, understanding how to select and edit elements in JavaScript is a fundamental skill for front-end web developers. By using the DOM and various methods and properties, you can create dynamic and interactive web pages that respond to user input and events.

Conclusion

In this introduction, we have learned how to select and edit elements in JavaScript using the DOM. By using the querySelector method and various properties and methods, we can manipulate the contents of a webpage and create dynamic and interactive user experiences.