HTML itself cannot directly read text files, but this functionality can be achieved through back-end programming languages (such as PHP, Python, Java) or front-end JavaScript technology. The backend method uses PHP's file_get_contents() function to read the content from the text file and embed it into the HTML page. The front-end JavaScript method uses the Fetch API to send a GET request to a text file on the server, then parses the response content and displays it in an HTML page.
HTML itself does not have the ability to directly read text files, because HTML is a markup language, mainly used to build and present web page structure and content. Rather than handling operations such as file reading. To read a text file and embed its content into an HTML page, you usually need to use a back-end programming language (such as PHP, Python, Java, etc.) or front-end JavaScript technology.
The following will introduce the methods of using back-end programming language and front-end JavaScript technology to read text files and embed them into HTML pages.
1. Using a back-end programming language to read a text file
It is common to use a back-end programming language to read a text file and embed its content into an HTML page. Methods. The following uses PHP as an example to illustrate this process:
1. Create a text file
First, you need a text file to store the content you want to read. Suppose you have a text file named example.txt with the following content:
这是一些示例文本。 它将被读取并显示在HTML页面上。
2. Write PHP code to read the text file
Then, you can use PHP The file_get_contents() function to read the contents of a text file. The following is a simple PHP script example:
<?php
$file = 'example.txt';
$text = file_get_contents($file);
if ($text === false) {
echo "无法读取文件: $file";
} else {
echo nl2br($text); // nl2br函数将换行符转换为<br>标签，以便在HTML中正确显示
}
?>In this script, the file_get_contents() function reads the contents of the specified file and stores it in the variable $text. If the read fails, it will return false, at which point you can print an error message. Otherwise, you can use the echo statement to output the text content to the HTML page.
3. Embed PHP code into HTML
Next, you can embed the PHP code into the HTML file to render the read text content in the browser . This is usually accomplished by placing the PHP code within the tags of the .php file. For example:
<!DOCTYPE html>
<html>
<head>
<title>读取文本文件示例</title>
</head>
<body>
<h1 id="读取的文本内容">读取的文本内容</h1>
<p>
<?php
// 这里是之前编写的PHP代码
$file = 'example.txt';
$text = file_get_contents($file);
if ($text === false) {
echo "无法读取文件: $file";
} else {
echo nl2br($text);
}
?>
</p>
</body>
</html>4. Configure the server and access the page
Finally, you need to add the .html file (actually a .php file in this case, because It contains PHP code) deployed to a PHP-enabled web server, such as Apache or Nginx. The server needs to be configured to be able to parse PHP code. Once configured, you can access the page through your browser and see the content read from the text file and embedded.
2. Use front-end JavaScript to read text files
Although HTML itself cannot read files, front-end JavaScript provides technologies such as File API and Fetch API, allowing users to Read local files on the browser side or obtain file contents through network requests. Here is an example of reading a text file from a server using JavaScript and the Fetch API:
1. Place the text file on the server
First, you need to place the text file (such as example.txt) on the web server so that it can be accessed through HTTP requests .
2. Write JavaScript code to read the text file
Then, you can use JavaScript’s Fetch API to send a GET request to the text file URL on the server and read Get the response content. The following is a simple example:
<!DOCTYPE html>
<html>
<head>
<title>使用JavaScript读取文本文件</title>
</head>
<body>
<h1 id="读取的文本内容">读取的文本内容</h1>
<pre id="textContent">
<script>
fetch('example.txt') // 假设example.txt位于同一目录下，或者提供完整的URL
.then(response => response.text()) // 解析响应内容为文本
.then(text => {
document.getElementById('textContent').textContent = text; // 将文本内容显示在<pre class="brush:php;toolbar:false">标签中
})
.catch(error => {
console.error('读取文件时发生错误:', error);
});
</script>
The above is the detailed content of How to read text files in html. For more information, please follow other related articles on the PHP Chinese website!
HTML超文本标记语言--超在那里？（文档分析）Aug 02, 2022 pm 06:04 PM本篇文章带大家了解一下HTML（超文本标记语言），介绍一下HTML的本质，HTML文档的结构、HTML文档的基本标签和图像标签、列表、表格标签、媒体元素、表单，希望对大家有所帮助！
web前端笔试题库之HTML篇Apr 21, 2022 am 11:56 AM总结了一些web前端面试（笔试）题分享给大家，本篇文章就先给大家分享HTML部分的笔试题（附答案），大家可以自己做做，看看能答对几个！
html怎么读取文本文件Mar 26, 2024 pm 04:07 PMHTML 本身无法直接读取文本文件，但可以通过后端编程语言（如 PHP、Python、Java）或前端 JavaScript 技术来实现此功能。后端方法使用 PHP 的 file_get_contents() 函数从文本文件中读取内容，并将其嵌入到 HTML 页面中。前端 JavaScript 方法使用 Fetch API 发送 GET 请求到服务器上的文本文件，然后解析响应内容并将其显示在 HTML 页面中。
HTML5中画布标签是什么May 18, 2022 pm 04:55 PMHTML5中画布标签是“<canvas>”。canvas标签用于图形的绘制，它只是一个矩形的图形容器，绘制图形必须通过脚本（通常是JavaScript）来完成；开发者可利用多种js方法来在canvas中绘制路径、盒、圆、字符以及添加图像等。
用 HTML 读取文本文件的最佳实践Apr 09, 2024 pm 03:45 PM使用元素并利用FileReaderAPI可以通过HTML读取文本文件。最佳实践包括使用accept属性过滤文件类型，利用multiple属性选择多个文件，以及通过onchange事件处理程序读取文件。一个实战案例演示了如何读取文本文件并显示其内容，利用FileReader的readAsText()方法将文件内容加载到一个变量中。
html中document是什么Jun 17, 2022 pm 04:18 PM在html中，document是文档对象的意思，代表浏览器窗口的文档；document对象是window对象的子对象，所以可通过“window.document”属性对其进行访问，每个载入浏览器的HTML文档都会成为Document对象。
文本文件的扩展名是什么Aug 22, 2022 pm 01:59 PM文本文件的扩展名是“txt”。文本文件是以TXT后缀名的文件，包含了极少格式信息。“.txt”格式并没有明确的定义，它通常是指那些能够被系统终端或者简单的文本编辑器接受的格式；任何能读取文字的程序都能读取带有“.txt”扩展名的文件，因此，通常认为这种文件是通用的、跨平台的。
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Zend Studio 13.0.1
Powerful PHP integrated development environment
EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function
Dreamweaver Mac version
Visual web development tools
Atom editor mac version download
The most popular open source editor
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
