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JavaScript: Element Selectors

An overview of the most important element sectors in JavaScript


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Alex Zelinsky

2 years ago | 1 min read

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JavaScript is a programming language that is used to create dynamic and interactive websites. It allows you to select elements on a page and manipulate them in various ways. In this blog post, we will discuss the most important element selectors for JavaScript. We will also provide examples of how they can be used.

What is the Document Object Model (DOM)?

The DOM is a tree-like structure that represents the HTML document. It consists of nodes, which can be elements, text, comments, or other types of content. The DOM can be accessed and manipulated using JavaScript.

Element selectors are used to select an element or group of elements in the DOM. There are several different element selectors, which we will discuss below.

ID Selector

The ID selector is used to select an element with a specific ID attribute value. For example, if we have an element with an ID of “profile”, we would use the following selector to select it:

let profile = document.getElementById("content");

Class Selector

The class selector is used to select elements with a specific class attribute value. For example, if we have elements with a class of “job”, we would use the following selector to select them:

let workExperience = document.getElementsByClassName("job");

Tag Selector

The tag selector is used to select elements with a specific tag name. For example, if we want to select all elements on the page that are paragraphs, we would use the following selector:

let volunteeringExperience = document.querySelector(".volunteering");

This would go through the DOM and select the first element that has a class of “volunteering”.

Query Selector All Selector

The querySelectorAll selector is used to select all elements that match a specified CSS selector. For example, if we want to select all elements with a class of “volunteering”, we would use the following selector:

let volunteeringExperience = document.querySelectorAll(".volunteering");

Conclusion

These are the most important element selectors for JavaScript. With these, you should be able to select any element on a page and manipulate it in various ways. Thanks for reading! I hope this article taught you something!

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Created by

Alex Zelinsky

Software Engineer | Web Development | Programming | JavaScript


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