Cross-domain problems encountered in Vue technology development and their solutions

Cross-domain problems and solutions encountered in the development of Vue technology

Abstract: This article will introduce the cross-domain problems that may be encountered during the development of Vue technology and solutions. We'll start with what causes cross-origin, then cover a few common solutions and provide specific code examples.

1. Causes of cross-domain problems
In web development, due to the browser's security policy, the browser will restrict requests from one source (domain, protocol or port) for resources from another source. This is the so-called "same origin policy". When we develop Vue technology and the interfaces of the front-end and back-end are not in the same domain, we will encounter cross-domain problems.

2. Solution

1. Proxy cross-domain
   Using a proxy server to forward API requests is a common method to solve cross-domain problems. We can configure the proxyTable property in vue.config.js to point to the proxy server. The following is a sample code:

// vue.config.js module.exports = { devServer: { proxy: { '/api': { target: 'http://api.example.com', changeOrigin: true, pathRewrite: { '^/api': '' } } } } }

2. JSONP
   JSONP is a cross-domain request method that dynamically creates