How to use JavaScript to achieve dynamic scrolling display effect of page title?-JS Tutorial-php.cn

How to use JavaScript to achieve dynamic scrolling display effect of page title?

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Release： 2023-10-27 11:58:45

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如何使用 JavaScript 实现页面标题的动态滚动显示效果？

How to use JavaScript to achieve dynamic scrolling display effect of page title?

When we browse the web, the page title is usually displayed statically on the browser's tab bar. However, sometimes we want the page title to be displayed in a dynamic scrolling manner to attract the user's attention. This article explains how to achieve this effect using JavaScript and provides specific code examples.

First, we need to set a <title> element in the <head> tag of the page as the title of the page. For example:

<!DOCTYPE html>
<html>
<head>
    <title>动态滚动显示标题</title>
</head>
<body>
    <!-- 页面内容 -->
</body>
</html>

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Then, we need to write JavaScript code to achieve the dynamic scrolling display effect of the title. Here are the main steps to achieve this effect:

Get the page title text.
Cut the title text into an array of single characters.
Create a timer to perform scrolling animation every once in a while.
Update the page title and process the scrolling effect every time the timer is executed.

The following is the specific code implementation:

// 获取页面标题文本
var title = document.title;

// 将标题文本切割为单个字符的数组
var chars = title.split('');

// 创建一个定时器，每隔100毫秒执行一次滚动动画
var timer = setInterval(animateTitle, 100);

// 当定时器执行时，更新页面标题并进行滚动效果的处理
function animateTitle() {
    // 获取页面标题文本的第一个字符
    var firstChar = chars.shift();

    // 将第一个字符添加到数组的末尾
    chars.push(firstChar);

    // 将更新后的标题文本设置为页面的标题
    document.title = chars.join('');

    // 清除并重新创建定时器，模拟动态滚动效果
    clearInterval(timer);
    timer = setInterval(animateTitle, 100);
}

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Insert the above code into the <script> tag of the page, or save it as a separate JavaScript file and introduce it into the page. When the page is loaded, the page title will be displayed in a dynamic scrolling manner until the user leaves the page or closes the browser.

It should be noted that in order to avoid performance problems, we can increase the time interval of dynamically scrolling the title appropriately to avoid updating the page title too frequently.

I hope this article can help you realize the dynamic scrolling display effect of page titles. If you have any questions or issues please feel free to ask and I will do my best to answer them.

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