JavaScript Placement#
You can include JavaScript code in an HTML document using the dedicated <script> tag. The placement of this tag depends on when you want the JavaScript to load:
Inside the
<head>section:Insert the
<script>tag between the opening<head>and closing</head>tags. Place your JavaScript code inside it.This ensures that the script is loaded and executed when the page loads. However, it can cause a delay in rendering the page because the browser waits for the script to download and execute before continuing with other HTML parsing.
Inside the
<body>section:You can place the
<script>tags containing your JavaScript anywhere within the<body>tags.While this approach allows the page to render faster, it may still cause a slight delay if the script is large or resource-intensive.
Just before the
</body>close tag:Some developers prefer placing the
<script>tags just before the closing</body>tag.This ensures that the entire HTML content is parsed and displayed before the JavaScript is loaded.
However, be cautious: if the script modifies the page content (e.g., via
document.write()), it can disrupt the rendering process.
Choose the placement based on your specific requirements and performance considerations.