HTML and JavaScript are two of the most important technologies used in web development. HTML stands for HyperText Markup Language, which is used to create the structure and content of web pages. JavaScript, on the other hand, is a programming language that is used to add interactivity and dynamic functionality to web pages.
HTML and JavaScript are often used together to create dynamic and interactive web pages. HTML provides the structure and content of the page, while JavaScript provides the functionality and interactivity. Together, they allow developers to create web pages that are both visually appealing and highly functional.
HTML is a markup language that is used to create the structure and content of web pages. It consists of a series of tags that are used to define different elements of a web page, such as headings, paragraphs, images, and links. HTML tags are enclosed in angle brackets, and can include attributes that provide additional information about the element.
JavaScript, on the other hand, is a programming language that is used to add interactivity and dynamic functionality to web pages. It can be used to create animations, validate forms, and respond to user input. JavaScript code is typically embedded directly into HTML pages using script tags.
Here are some examples of HTML and JavaScript code that can be used to create dynamic and interactive web pages:
Example 1:
This code creates a button that, when clicked, displays an alert box with a message:
<button onclick="alert('Hello, world!')">Click me</button>
Example 2:
This code creates a form that asks the user for their name and then displays a personalized greeting:
<form>
<label for="name">Name:</label>
<input type="text" id="name">
<button onclick="greet()">Submit</button>
</form>
<script>
function greet() {
var name = document.getElementById("name").value;
alert("Hello, " + name + "!");
}
</script>
Example 3:
This code creates an image gallery that allows the user to click on thumbnails to view larger images:
<div id="gallery">
<img src="image1.jpg" onclick="showImage('image1.jpg')">
<img src="image2.jpg" onclick="showImage('image2.jpg')">
<img src="image3.jpg" onclick="showImage('image3.jpg')">
</div>
<script>
function showImage(image) {
var fullImage = document.createElement("img");
fullImage.src = image;
document.body.appendChild(fullImage);
}
</script>