<script>标签嵌入JavaScript代码，例如：<script>
// JavaScript code here
</script>
<script>标签引入外部JavaScript文件，例如：<script src="script.js"></script>
<button onclick="myFunction()">Click me</button>
<script>标签的type="text/javascript"属性将JavaScript代码定义在HTML中的<script>标签区块内，例如：<script type="text/javascript">
// JavaScript code here
</script>
