Web Front-end
Vue.js
What should I do if 'TypeError: Failed to fetch' occurs when using axios in a Vue application?
What should I do if 'TypeError: Failed to fetch' occurs when using axios in a Vue application?
Jun 24, 2023 pm 11:03 PM
Recently, during the development of Vue applications, I encountered a common problem: "TypeError: Failed to fetch" error message. This problem occurs when using axios to make HTTP requests and the backend server does not respond to the request correctly.
This error message usually indicates that the request cannot reach the server, possibly due to network reasons or the server not responding. What should we do after this error message appears?
The following are some solutions:
- Check the network connection
Since this error message usually indicates a problem with the network connection, we first need to check this machine network connection is working properly. We can try visiting other websites to make sure the connection is working.
- Check if the API address is correct
Next, we need to check if the API address requested using axios is correct. We can test directly in the browser whether the API address is working properly. If the API address is incorrect or cannot respond, we need to check the settings of the backend server or contact the API provider for help.
- Check CORS settings
If we are using cross-domain requests, we need to make sure that the backend server has CORS configured correctly. We can add the following code in the server's code to enable CORS support:
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
res.setHeader('Access-Control-Allow-Credentials', true);If we are using a third-party API, we need to check their documentation to understand how to configure CORS correctly.
- Check request header settings
Some APIs require specific request header settings to work properly, we need to check whether the request header is set correctly. For example, some APIs require adding an Authorization token in the request header for authentication.
- Check the backend server status
Finally, we need to check whether the backend server is running normally. We can perform manual testing on the server to confirm whether the server is able to respond to requests. If the server is not responding, we need to check the server's logs to determine what went wrong.
In short, when the "TypeError: Failed to fetch" error message appears, we should first check whether the network connection is normal, and then check the API address, CORS settings, request header settings and back-end server status to find and solve it question.
The above is the detailed content of What should I do if 'TypeError: Failed to fetch' occurs when using axios in a Vue application?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to develop a complete Python Web application?
May 23, 2025 pm 10:39 PM
To develop a complete Python Web application, follow these steps: 1. Choose the appropriate framework, such as Django or Flask. 2. Integrate databases and use ORMs such as SQLAlchemy. 3. Design the front-end and use Vue or React. 4. Perform the test, use pytest or unittest. 5. Deploy applications, use Docker and platforms such as Heroku or AWS. Through these steps, powerful and efficient web applications can be built.
How to start a vue project with vscode
Apr 16, 2025 am 06:15 AM
Starting a Vue.js project in VSCode requires the following steps: Installing Vue.js CLI Create a new project Installation dependencies Starting the project in Terminal Open the project in VSCode Run the project again in VSCode
Laravel Vue.js single page application (SPA) tutorial
May 15, 2025 pm 09:54 PM
Single-page applications (SPAs) can be built using Laravel and Vue.js. 1) Define API routing and controller in Laravel to process data logic. 2) Create a componentized front-end in Vue.js to realize user interface and data interaction. 3) Configure CORS and use axios for data interaction. 4) Use VueRouter to implement routing management and improve user experience.
How to debug vue project with vscode
Apr 16, 2025 am 07:00 AM
Steps to debug a Vue project in VS Code: Run the project: npm run serve or yarn serve Open the debugger: F5 or "Start debug" button Select "Vue: Attach to Chrome" configuration attached to the browser: VS Code automatically attached to the project running in Chrome Settings Breakpoint Start debug: F5 or "Start debug" button Step by step: Use the debug toolbar button to execute the code step by step Check variables: "Surveillance" window
How to configure vue with vscode
Apr 16, 2025 am 07:06 AM
How to configure VSCode to write Vue: Install the Vue CLI and VSCode Vue plug-in. Create a Vue project. Set syntax highlighting, linting, automatic formatting, and code snippets. Install ESLint and Prettier to enhance code quality. Integrated Git (optional). After the configuration is complete, VSCode is ready for Vue development.
How to separate the front and back end of wordpress
Apr 20, 2025 am 08:39 AM
It is not recommended to directly modify the native code when separating WordPress front and back ends, and it is more suitable for "improved separation". Use the REST API to obtain data and build a user interface using the front-end framework. Identify which functions are called through the API, which are retained on the backend, and which can be cancelled. The Headless WordPress mode allows for a more thorough separation, but it is more cost-effective and difficult to develop. Pay attention to security and performance, optimize API response speed and cache, and optimize WordPress itself. Gradually migrate functions and use version control tools to manage code.
How to run vue with vscode
Apr 16, 2025 am 07:39 AM
Running a Vue project in VSCode requires the following steps: 1. Install the Vue CLI; 2. Create a Vue project; 3. Switch to the project directory; 4. Install project dependencies; 5. Run the development server; 6. Open the browser to visit http://localhost:8080.
How to push the video stream of Hikvision camera SDK to the front-end Vue project for real-time playback?
Apr 19, 2025 pm 07:42 PM
How to push video streams from Hikvision camera SDK to front-end Vue project? During the development process, you often encounter videos that need to be captured by the camera to be circulated...
