DOM Manipulation with Vanilla JavaScript
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DOM Manipulation with Vanilla JavaScript
DOM (Document Object Model) manipulation is a core skill in web development. It allows developers to dynamically change the content, structure, and style of web pages without reloading them. Using Vanilla JavaScript—plain JavaScript without any libraries or frameworks—you can perform powerful DOM operations with ease and precision.
To begin, you must understand how to select elements. JavaScript provides methods like getElementById(), getElementsByClassName(), getElementsByTagName(), querySelector(), and querySelectorAll(). For example:
javascript
const title = document.getElementById("main-title");
Once selected, you can modify content or attributes using properties like textContent, innerHTML, and setAttribute(). For instance:
javascript
title.textContent = "Welcome to My Blog!";
You can also change styles dynamically using the .style property:
javascript
title.style.color = "blue";
To create new elements, use document.createElement() and then add them to the DOM using appendChild() or append(). Example:
javascript
const newParagraph = document.createElement("p");
newParagraph.textContent = "This is a new paragraph.";
document.body.appendChild(newParagraph);
Event handling is another essential part of DOM manipulation. Use addEventListener() to attach interactive behaviors:
javascript
button.addEventListener("click", () => {
alert("Button Clicked!");
});
Mastering DOM manipulation with vanilla JavaScript gives you full control over how your web page behaves, loads faster, and reduces dependency on libraries like jQuery. It’s a foundational skill every front-end developer should learn.
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