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Practical application cases of HTML global attributes: 5 tips to improve the efficiency of web page development
HTML, as a markup language for building web page structures, has many global attributes, which can It is applied to different elements to achieve different functions and effects. In the process of web development, rational use of these global properties can greatly improve development efficiency. This article will introduce you to 5 practical application cases and attach corresponding code examples.
<!DOCTYPE html> <html> <head> <link rel="stylesheet" type="text/css" href="styles.css"> </head> <body> <h1 class="title">标题1</h1> <h2 class="title">标题2</h2> </body> </html>
/* styles.css */ .title { color: blue; font-size: 24px; }
In this way, we can easily batch modify the style information of all elements using the .title class name.
<!DOCTYPE html> <html> <head> <script> function changeText() { var element = document.getElementById("text"); element.innerHTML = "新的文本内容"; } </script> </head> <body> <button onclick="changeText()">点击修改文本</button> <p id="text">原始文本内容</p> </body> </html>
After clicking the button, the text content on the page will be modified to "new text content".
<!DOCTYPE html> <html> <body> <p title="这是一段描述信息">这是一个段落</p> <img src="image.jpg" alt="图片" title="这是一张图片"> </body> </html>
Hovering over a paragraph will say "This is a description", hovering over an image will say "This is a picture".
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> </head> <body> <h1 lang="en">Hello World!</h1> <h1 lang="ja">こんにちは、世界!</h1> </body> </html>
According to different lang attribute values, we can achieve the display effect of the website in different language environments.
<!DOCTYPE html> <html> <head> </head> <body> <input type="text" tabindex="2"> <input type="checkbox" tabindex="1"> <button tabindex="3">按钮</button> </body> </html>
In the above example, the tabindex attribute value of the element is 1, 2, 3, indicating the navigation order when the Tab key is pressed.
By properly applying the above global properties, we can improve the efficiency and flexibility of web development. These properties not only improve the user experience, but also make web pages easier to maintain and expand. I hope that through the introduction of this article, I can have a deeper understanding and mastery of the practical application of HTML global attributes.
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