Filename without extension javascript

JavaScript: How to Get Filename Without Extension in JS — Methods and Examples

Learn different methods to get the filename without extension in JavaScript. Use path.parse(), substring(), split(), pop(), basename(), regular expressions, FileInfo class, extname(), and replace().

• Using path.parse() and path.join() in Node.js
• Using substring() to remove file extension in JavaScript
• Using split() and pop() to get file extension in JavaScript
• Using lastIndexOf() and substring() to get filename from path in JavaScript
• Using basename() in Node.js
• Using regular expressions to capture filename without extension in JavaScript
• Using FileInfo class in C
• Using extname() and replace() in Node.js
• Additional code examples for getting filename without extension in JavaScript
• Conclusion
• How can I find the filename without an extension?
• How to remove extension from filename js?
• How to get only file name from path in JavaScript?
• How to get current file name in JavaScript?

JavaScript is one of the most popular programming languages used for web development. It is commonly used to create interactive web pages, dynamic user interfaces, and animations. Sometimes it’s necessary to get the filename without the extension in JavaScript. In this article, we will explore several methods to accomplish this task.

Using path.parse() and path.join() in Node.js

Node.js is an open-source, cross-platform JavaScript runtime environment . It is built on the V8 JavaScript engine and allows developers to run JavaScript code outside of a web browser. The path module in Node.js provides several utilities for working with file and directory paths. One of these utilities is the path.parse() method, which returns an object representing the file path. We can use this object to get the filename without the extension using the path.join() method.

const path = require('path');const filePath = '/path/to/file.txt'; const parsedPath = path.parse(filePath); const filenameWithoutExtension = path.join(parsedPath.dir, parsedPath.name);console.log(filenameWithoutExtension); // /path/to/file 

In this example, we first define the file path as a string. We then pass this string to the path.parse() method, which returns an object representing the components of the file path. We then use the path.join() method to join the directory and filename components of the path, excluding the file extension. The resulting string is logged to the console.

Using substring() to remove file extension in JavaScript

Another way to get the filename without the extension in JavaScript is by using the substring() method. The substring() method returns the part of the string between the start and end indexes, or to the end of the string. We can use this method to remove the file extension from a string.

const filename = 'file.txt'; const filenameWithoutExtension = filename.substring(0, filename.lastIndexOf('.'));console.log(filenameWithoutExtension); // file 

In this example, we define the filename as a string. We then use the substring() method to extract the portion of the string before the last occurrence of the period character, which represents the file extension. The resulting string is logged to the console.

Using split() and pop() to get file extension in JavaScript

We can also get the filename without the extension in JavaScript by using the split() and pop() methods. The split() method splits a string into an array of substrings based on a specified separator. We can split the filename string at the period character to get an array containing the filename and extension. We can then use the pop() method to remove and return the last element of the array, which represents the file extension.

const filename = 'file.txt'; const filenameParts = filename.split('.'); filenameParts.pop(); const filenameWithoutExtension = filenameParts.join('.');console.log(filenameWithoutExtension); // file 

In this example, we define the filename as a string. We then use the split() method to split the string at the period character, which returns an array containing the filename and extension. We then use the pop() method to remove the last element of the array, which represents the extension. Finally, we use the join() method to join the elements of the array back into a string, excluding the extension. The resulting string is logged to the console.

Using lastIndexOf() and substring() to get filename from path in JavaScript

If we have a full file path, including the directory and filename, we can use the lastIndexOf() and substring() methods to get the filename without the extension. The lastIndexOf() method returns the last index of a specified value in a string. We can use this method to find the last occurrence of the path separator character, which can vary depending on the operating system. We can then use the substring() method to extract the filename from the path string.

const filePath = '/path/to/file.txt'; const filenameWithoutExtension = filePath.substring(filePath.lastIndexOf('/') + 1, filePath.lastIndexOf('.'));console.log(filenameWithoutExtension); // file 

In this example, we define the file path as a string. We then use the lastIndexOf() method to find the last occurrence of the path separator character, which is a forward slash in this case. We add 1 to the index returned by lastIndexOf() to exclude the path separator from the filename. We then use the substring() method to extract the portion of the string between the path separator and the last occurrence of the period character, which represents the file extension. The resulting string is logged to the console.

Using basename() in Node.js

Another method to get the filename without the extension in Node.js is by using the basename() method from the fs module. The fs module provides a way of working with the file system in a way modeled on standard POSIX functions. The basename() method returns the last portion of a path, which represents the filename.

const path = require('path'); const < basename >= require('fs');const filePath = '/path/to/file.txt'; const filenameWithoutExtension = basename(filePath, path.extname(filePath));console.log(filenameWithoutExtension); // file 

In this example, we first require the path and fs modules. We then define the file path as a string. We use the basename() method, passing in the file path and the file extension returned by the path.extname() method. The basename() method returns the last portion of the path, excluding the file extension. The resulting string is logged to the console.

Using regular expressions to capture filename without extension in JavaScript

Regular expressions are a powerful tool for pattern matching and text manipulation in JavaScript. We can use regular expressions to capture the filename without the extension in a string.

const filename = 'file.txt'; const filenameWithoutExtension = filename.match(/(.*)\.[^.]+$/)[1];console.log(filenameWithoutExtension); // file 

In this example, we define the filename as a string. We then use a regular expression to match the portion of the string before the last occurrence of the period character, which represents the file extension. The match() method returns an array containing the entire match and any captured groups. We can use array indexing to extract the first captured group, which represents the filename without the extension. The resulting string is logged to the console.

Using FileInfo class in C

C# is a modern, object-oriented programming language developed by Microsoft. It is commonly used to create Windows desktop applications, games, and web applications. The FileInfo class is part of the System.IO namespace in C#. We can use this class to get the filename without the extension in C#.

using System.IO;string filePath = @"C:\path\to\file.txt"; string filenameWithoutExtension = Path.GetFileNameWithoutExtension(filePath);Console.WriteLine(filenameWithoutExtension); // file 

In this example, we first include the System.IO namespace. We then define the file path as a string. We use the Path.GetFileNameWithoutExtension() method, passing in the file path. The method returns the filename without the extension. The resulting string is written to the console.

Using extname() and replace() in Node.js

We can also use the extname() method with the path module in Node.js to get the file extension. We can then use the replace() method to remove the file extension from the filename.

const path = require('path');const filePath = '/path/to/file.txt'; const extension = path.extname(filePath); const filenameWithoutExtension = path.basename(filePath, extension);console.log(filenameWithoutExtension); // file 

In this example, we first require the path module. We then define the file path as a string. We use the path.extname() method to get the file extension. We then use the path.basename() method, passing in the file path and the extension, to get the filename without the extension. The resulting string is logged to the console.

Additional code examples for getting filename without extension in JavaScript

In Javascript , for instance, how to get the extension from filename using javascript code sample

var ext = fileName.substr(fileName.lastIndexOf('.') + 1);

In Javascript , for example, node js get file name without extension code sample

filename.split('.').slice(0, -1).join('.') 

In Javascript , for example, file name without extension javascript code sample

Conclusion

In this article, we explored several methods to get the filename without the extension in JavaScript. Depending on the specific use case and programming environment, one method may be more suitable than another. By using the methods outlined in this post, developers can accomplish this task efficiently and effectively.

Frequently Asked Questions — FAQs

How do I get the filename without extension in JavaScript?

To get the filename without extension in JavaScript, you can use methods like path.parse(), substring(), split(), pop(), basename(), regular expressions, and more. These methods can help you efficiently and effectively accomplish this task.

Can I get the filename without extension in Node.js?

Yes, you can get the filename without extension in Node.js using methods like path.parse(), path.join(), basename(), and extname(). These methods can help you get the filename without extension in a Node.js environment.

What is the FileInfo class in C#?

The FileInfo class is a part of the System.IO namespace in C#. It provides methods and properties for working with files, including getting the filename without extension. You can use the FileInfo class to accomplish this task in a C# environment.

How do I remove the file extension from a string in JavaScript?

To remove the file extension from a string in JavaScript, you can use the substring() method. This method takes two arguments, the starting index and the ending index, and returns a new string that contains the characters between those indices.

What are regular expressions, and how can I use them to get the filename without extension in JavaScript?

Regular expressions are a powerful tool for pattern matching and text manipulation in JavaScript. You can use regular expressions to capture the filename without extension by matching patterns in the string that represent the filename.

Which method is the most efficient for getting the filename without extension in JavaScript?

The most efficient method for getting the filename without extension in JavaScript depends on the specific use case and programming environment. Some methods may be more efficient in certain situations than others, so it’s important to consider the requirements of your project before selecting a method.

Источник

Node.js — get file names without extensions from array of paths

Aisha

In this article, we would like to show you how to get file name without extension from path in Node.js.

const path = require('path'); // example array of paths const paths = ['C:/app/index.js', 'C:/app/module1.js', 'C:/app/module2.js']; const result = paths.map(pth => < const extension = path.extname(pth); // get file extension return path.basename(pth, extension); // for each pth return only file name >);

Practical example

1. Import path module using:

2. For each path in the array:

1. Use path.extname() method with the path you want to get the filename from as an argument to get the file extension. We need to know the file extension, so we can get rid of it in the next step.
2. Use path.basename() method with the path and the optional extension argument so the file extension will be removed leaving only the file name.
3. Push the name to the result array.

const path = require('path'); // example array of paths const paths = ['C:/app/index.js', 'C:/app/module1.js', 'C:/app/module2.js']; const result = []; for (const pth of paths) < // get file extension const extension = path.extname(pth); // push file name without extension to the result array result.push(path.basename(pth, extension)); >console.log(result); // [ 'index', 'module1', 'module2' ]

Note:

The path.basename() method with one argument ( myPath ) returns file name with extension from given path.

Alternative titles

Источник