使用javascript的For循环将alt添加到图像

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Image Alt Attribute Example</title>
</head>
<body>
    <img src="image1.jpg" id="image1">
    <img src="image2.jpg" id="image2">
    <img src="image3.jpg" id="image3">

    <script>
        // 获取所有图像元素
        const images = document.getElementsByTagName('img');
        
        // 使用for循环遍历每个图像元素并添加alt属性
        for (let i = 0; i < images.length; i++) {
            images[i].setAttribute('alt', 'Description of image ' + (i + 1));
        }
    </script>
</body>
</html>