How to open local file in html-HTML Tutorial-php.cn

How to open local file in html

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Release： 2024-04-22 09:39:17

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<p>HTML can be used to open local files as follows: Create a .html file and import the jQuery library. Create an input field that allows the user to select a file. Listen to the file selection event and use a FileReader() object to read the file contents. Display the read file contents on the web page.

<p>

<p>How to open a local file using HTML

<p>HTML (Hypertext Markup Language) is commonly used to create web pages, but It can also be used to read and display local files.

<p> Steps:

<p>Create HTML file:
- Use a text editor ( such as Notepad or Sublime Text) to create a new file.
- Save the file with the .html extension (for example: myfile.html).
<p>Import jQuery:
- jQuery is a JavaScript library that makes manipulating HTML elements easier.
- Add the following code to the <head> section of the HTML file:
```
<code class="html"><script src="https://code.jquery.com/jquery-3.6.0.min.js"></script></code>
```
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<p>Create the input field:
- Add an <input> element to allow the user to select a file to open:
```
<code class="html"><input type="file"></code>
```
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<p>Listen to the file selection event:

Use jQuery's change() event to listen to the file selection:

<code class="html"><script>
$("input[type=file]").change(function() {
  // 文件选择后执行此函数
});
</script></code>

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<p>Handling file selection:

In the event handler function, get the selected file and use the FileReader() object to read the contents of the file:

<code class="javascript">var file = this.files[0];
var reader = new FileReader();
reader.onload = function() {
  // 读取的文件内容存储在 `reader.result` 中
};
reader.readAsText(file);</code>

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<p>Display file content:
- After reading the file content, you can use HTML elements (such as <div> or <p>) to display it on the web page.

<p>Sample code:

<code class="html"><!DOCTYPE html>
<html>
<head>
  <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
  <input type="file">

  <script>
  $("input[type=file]").change(function() {
    var file = this.files[0];
    var reader = new FileReader();
    reader.onload = function() {
      $("#result").html(reader.result);
    };
    reader.readAsText(file);
  });
  </script>

  <div id="result"></div>
</body>
</html></code>

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