With the continuous development of network technology, more and more people are beginning to use online editors to edit text, code and other content. If you are a developer, you may want to learn how to build your own online editor using PHP and JavaScript. This article will introduce some basic steps and techniques to help you achieve this goal.
Before you start writing code, you need to do some design and planning for the editor's interface. Your editor interface needs to have some basic features like:
Another key issue is to choose a relevant JavaScript library to implement the various functions of the editor. There are many open source JavaScript libraries to choose from, but some of the most popular are:
Of course, you can also build your own basic library based on these libraries.
Before implementing these functions, you need to write PHP code to handle the input on the server and send it to the editor. Here are a few tasks you'll need to perform:
The following is a simple PHP code used to process user input and output processing results.
<?php //将要被处理的数据文件名 $filename = "data.txt"; //获取文件内容 if (file_exists($filename)) { $content = file_get_contents($filename); } //从POST请求中获取数据 if ($_POST) { $content = $_POST["content"]; //将接收到的数据写入文件中去 file_put_contents($filename, $content); } //输出文件内容 echo $content; ?>
Once your server-side code is in place, you need to write some JavaScript code to send data from the user's browser to the server , and displays the server's response in the editor. Here are some of the tasks you'll need to perform:
The following is a sample code that demonstrates how to send data from the client to the server and detect the server's response to achieve real-time updates:
<!DOCTYPE html> <html> <head> <script src="http://code.jquery.com/jquery-latest.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.58.3/codemirror.min.js"></script> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.58.3/codemirror.min.css"/> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.58.3/theme/monokai.min.css"/> <script type="text/javascript"> //initialize editor var editor = CodeMirror(document.body, { lineNumbers: true, mode: "htmlmixed", theme: "monokai" }); //save content to server function save_content() { $.ajax({ url: "save_content.php", type: "POST", data: { content: editor.getValue() }, success: function(data) { console.log("Content Saved!"); } }); } //load content from server function load_content() { $.ajax({ url: "save_content.php", type: "GET", success: function(data) { editor.setValue(data); } }); } //run on load $(document).ready(function() { load_content(); setInterval(save_content, 3000); }); </script> </head> <body></body> </html>
Through this article, you are now Already know how to build an online editor using PHP and JavaScript. This is a very important step in developing Web technology and provides the most basic foundation for future work, which can be applied anywhere that text input and processing is required.
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